diff --git a/examples/cosmas1.json b/examples/cosmas1.json
new file mode 100644
index 0000000..871fce1
--- /dev/null
+++ b/examples/cosmas1.json
@@ -0,0 +1,12 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:token",
+    "wrap" : {
+      "@type" : "korap:term",
+      "key" : "Buch",
+      "layer" : "orth",
+      "match" : "match:eq"
+    }
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas10.json b/examples/cosmas10.json
new file mode 100644
index 0000000..d958810
--- /dev/null
+++ b/examples/cosmas10.json
@@ -0,0 +1,41 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:sequence",
+    "operands" : [ {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Institut",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "für",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "caseInsensitive" : true,
+        "key" : "deutsche",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Sprache",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas11.json b/examples/cosmas11.json
new file mode 100644
index 0000000..6cd164f
--- /dev/null
+++ b/examples/cosmas11.json
@@ -0,0 +1,40 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:sequence",
+    "operands" : [ {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Institut",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "für",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "deutsch",
+        "layer" : "lemma",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Sprache",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas12.json b/examples/cosmas12.json
new file mode 100644
index 0000000..e6d8895
--- /dev/null
+++ b/examples/cosmas12.json
@@ -0,0 +1,43 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:sequence",
+    "inOrder" : true,
+    "distances" : [ {
+      "@type" : "korap:distance",
+      "key" : "w",
+      "min" : 0,
+      "max" : 2
+    } ],
+    "operands" : [ {
+      "@type" : "korap:group",
+      "operation" : "operation:sequence",
+      "operands" : [ {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "Institut",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      }, {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "für",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      } ]
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Sprache",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas13.json b/examples/cosmas13.json
new file mode 100644
index 0000000..ea83cba
--- /dev/null
+++ b/examples/cosmas13.json
@@ -0,0 +1,56 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:sequence",
+    "inOrder" : true,
+    "distances" : [ {
+      "@type" : "korap:distance",
+      "key" : "w",
+      "min" : 0,
+      "max" : 1,
+      "exclude" : true
+    } ],
+    "operands" : [ {
+      "@type" : "korap:group",
+      "operation" : "operation:sequence",
+      "operands" : [ {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "Institut",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      }, {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "für",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      } ]
+    }, {
+      "@type" : "korap:group",
+      "operation" : "operation:sequence",
+      "operands" : [ {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "deutsche",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      }, {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "Sprache",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      } ]
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas14.json b/examples/cosmas14.json
new file mode 100644
index 0000000..f7fd874
--- /dev/null
+++ b/examples/cosmas14.json
@@ -0,0 +1,40 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:sequence",
+    "operands" : [ {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Institut",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "für",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "A",
+        "layer" : "pos",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Sprache",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas15.json b/examples/cosmas15.json
new file mode 100644
index 0000000..f5aabc0
--- /dev/null
+++ b/examples/cosmas15.json
@@ -0,0 +1,30 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:submatch",
+    "classRef" : [ 1 ],
+    "operands" : [ {
+      "@type" : "korap:group",
+      "operation" : "operation:position",
+      "frame" : "frame:startswith",
+      "operands" : [ {
+        "@type" : "korap:span",
+        "key" : "s"
+      }, {
+        "@type" : "korap:group",
+        "operation" : "operation:class",
+        "class" : 1,
+        "operands" : [ {
+          "@type" : "korap:token",
+          "wrap" : {
+            "@type" : "korap:term",
+            "key" : "wegen",
+            "layer" : "orth",
+            "match" : "match:eq"
+          }
+        } ]
+      } ]
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas16.json b/examples/cosmas16.json
new file mode 100644
index 0000000..61333fd
--- /dev/null
+++ b/examples/cosmas16.json
@@ -0,0 +1,31 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:submatch",
+    "classRef" : [ 1 ],
+    "operands" : [ {
+      "@type" : "korap:group",
+      "operation" : "operation:position",
+      "frame" : "frame:startswith",
+      "operands" : [ {
+        "@type" : "korap:span",
+        "key" : "s"
+      }, {
+        "@type" : "korap:group",
+        "operation" : "operation:class",
+        "class" : 1,
+        "operands" : [ {
+          "@type" : "korap:token",
+          "wrap" : {
+            "@type" : "korap:term",
+            "caseInsensitive" : true,
+            "key" : "wegen",
+            "layer" : "orth",
+            "match" : "match:eq"
+          }
+        } ]
+      } ]
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas17.json b/examples/cosmas17.json
new file mode 100644
index 0000000..32e073b
--- /dev/null
+++ b/examples/cosmas17.json
@@ -0,0 +1,21 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:position",
+    "frame" : "frame:startswith",
+    "operands" : [ {
+      "@type" : "korap:span",
+      "key" : "s"
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "caseInsensitive" : true,
+        "key" : "wegen",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas18.json b/examples/cosmas18.json
new file mode 100644
index 0000000..4a8aa85
--- /dev/null
+++ b/examples/cosmas18.json
@@ -0,0 +1,12 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:submatch",
+    "@spanRef" : [ 0, 1 ],
+    "operands" : [ {
+      "@type" : "korap:span",
+      "key" : "s"
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas19.json b/examples/cosmas19.json
new file mode 100644
index 0000000..b31d80b
--- /dev/null
+++ b/examples/cosmas19.json
@@ -0,0 +1,30 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:submatch",
+    "classRef" : [ 1 ],
+    "operands" : [ {
+      "@type" : "korap:group",
+      "operation" : "operation:position",
+      "frame" : "frame:startswith",
+      "operands" : [ {
+        "@type" : "korap:span",
+        "key" : "s"
+      }, {
+        "@type" : "korap:group",
+        "operation" : "operation:class",
+        "class" : 1,
+        "operands" : [ {
+          "@type" : "korap:token",
+          "wrap" : {
+            "@type" : "korap:term",
+            "key" : "V",
+            "layer" : "pos",
+            "match" : "match:eq"
+          }
+        } ]
+      } ]
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas2.json b/examples/cosmas2.json
new file mode 100644
index 0000000..fdcb2d3
--- /dev/null
+++ b/examples/cosmas2.json
@@ -0,0 +1,24 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:sequence",
+    "operands" : [ {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "das",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Buch",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas20.json b/examples/cosmas20.json
new file mode 100644
index 0000000..32887c7
--- /dev/null
+++ b/examples/cosmas20.json
@@ -0,0 +1,30 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:submatch",
+    "classRef" : [ 1 ],
+    "operands" : [ {
+      "@type" : "korap:group",
+      "operation" : "operation:position",
+      "frame" : "frame:endswith",
+      "operands" : [ {
+        "@type" : "korap:span",
+        "key" : "s"
+      }, {
+        "@type" : "korap:group",
+        "operation" : "operation:class",
+        "class" : 1,
+        "operands" : [ {
+          "@type" : "korap:token",
+          "wrap" : {
+            "@type" : "korap:term",
+            "key" : "V",
+            "layer" : "pos",
+            "match" : "match:eq"
+          }
+        } ]
+      } ]
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas3.json b/examples/cosmas3.json
new file mode 100644
index 0000000..2c77f42
--- /dev/null
+++ b/examples/cosmas3.json
@@ -0,0 +1,31 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:sequence",
+    "inOrder" : true,
+    "distances" : [ {
+      "@type" : "korap:distance",
+      "key" : "w",
+      "min" : 1,
+      "max" : 3
+    } ],
+    "operands" : [ {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "das",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Buch",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas4.json b/examples/cosmas4.json
new file mode 100644
index 0000000..2040995
--- /dev/null
+++ b/examples/cosmas4.json
@@ -0,0 +1,40 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:sequence",
+    "inOrder" : true,
+    "distances" : [ {
+      "@type" : "korap:group",
+      "operation" : "operation:and",
+      "operands" : [ {
+        "@type" : "korap:distance",
+        "key" : "w",
+        "min" : 1,
+        "max" : 3
+      }, {
+        "@type" : "korap:distance",
+        "key" : "s",
+        "min" : 1,
+        "max" : 1
+      } ]
+    } ],
+    "operands" : [ {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "das",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Buch",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas5.json b/examples/cosmas5.json
new file mode 100644
index 0000000..9b9222d
--- /dev/null
+++ b/examples/cosmas5.json
@@ -0,0 +1,59 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:sequence",
+    "inOrder" : true,
+    "distances" : [ {
+      "@type" : "korap:distance",
+      "key" : "w",
+      "min" : 0,
+      "max" : 5
+    } ],
+    "operands" : [ {
+      "@type" : "korap:group",
+      "operation" : "operation:sequence",
+      "inOrder" : true,
+      "distances" : [ {
+        "@type" : "korap:group",
+        "operation" : "operation:and",
+        "operands" : [ {
+          "@type" : "korap:distance",
+          "key" : "w",
+          "min" : 1,
+          "max" : 3
+        }, {
+          "@type" : "korap:distance",
+          "key" : "s",
+          "min" : 1,
+          "max" : 1
+        } ]
+      } ],
+      "operands" : [ {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "das",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      }, {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "Buch",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      } ]
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Tisch",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas6.json b/examples/cosmas6.json
new file mode 100644
index 0000000..488d3af
--- /dev/null
+++ b/examples/cosmas6.json
@@ -0,0 +1,59 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:sequence",
+    "inOrder" : true,
+    "distances" : [ {
+      "@type" : "korap:distance",
+      "key" : "w",
+      "min" : 0,
+      "max" : 5
+    } ],
+    "operands" : [ {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Tisch",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:group",
+      "operation" : "operation:sequence",
+      "inOrder" : true,
+      "distances" : [ {
+        "@type" : "korap:group",
+        "operation" : "operation:and",
+        "operands" : [ {
+          "@type" : "korap:distance",
+          "key" : "w",
+          "min" : 1,
+          "max" : 3
+        }, {
+          "@type" : "korap:distance",
+          "key" : "s",
+          "min" : 1,
+          "max" : 1
+        } ]
+      } ],
+      "operands" : [ {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "das",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      }, {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "Buch",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      } ]
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas7.json b/examples/cosmas7.json
new file mode 100644
index 0000000..aa430e8
--- /dev/null
+++ b/examples/cosmas7.json
@@ -0,0 +1,79 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:sequence",
+    "inOrder" : true,
+    "distances" : [ {
+      "@type" : "korap:distance",
+      "key" : "w",
+      "min" : 0,
+      "max" : 5
+    } ],
+    "operands" : [ {
+      "@type" : "korap:group",
+      "operation" : "operation:sequence",
+      "inOrder" : true,
+      "distances" : [ {
+        "@type" : "korap:group",
+        "operation" : "operation:and",
+        "operands" : [ {
+          "@type" : "korap:distance",
+          "key" : "w",
+          "min" : 1,
+          "max" : 3
+        }, {
+          "@type" : "korap:distance",
+          "key" : "s",
+          "min" : 1,
+          "max" : 1
+        } ]
+      } ],
+      "operands" : [ {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "das",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      }, {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "Buch",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      } ]
+    }, {
+      "@type" : "korap:group",
+      "operation" : "operation:sequence",
+      "operands" : [ {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "auf",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      }, {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "dem",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      }, {
+        "@type" : "korap:token",
+        "wrap" : {
+          "@type" : "korap:term",
+          "key" : "Tisch",
+          "layer" : "orth",
+          "match" : "match:eq"
+        }
+      } ]
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas8.json b/examples/cosmas8.json
new file mode 100644
index 0000000..a8f4a3f
--- /dev/null
+++ b/examples/cosmas8.json
@@ -0,0 +1,40 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:sequence",
+    "operands" : [ {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Institut",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "für",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Deutsche",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Sprache",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/cosmas9.json b/examples/cosmas9.json
new file mode 100644
index 0000000..865226c
--- /dev/null
+++ b/examples/cosmas9.json
@@ -0,0 +1,40 @@
+{
+  "context" : "http://ids-mannheim.de/ns/KorAP/json-ld/v0.1/context.jsonld",
+  "query" : {
+    "@type" : "korap:group",
+    "operation" : "operation:sequence",
+    "operands" : [ {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Institut",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "für",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "deutsche",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    }, {
+      "@type" : "korap:token",
+      "wrap" : {
+        "@type" : "korap:term",
+        "key" : "Sprache",
+        "layer" : "orth",
+        "match" : "match:eq"
+      }
+    } ]
+  }
+}
\ No newline at end of file
diff --git a/examples/examples.txt b/examples/examples.txt
index aa5f23f..f9987d6 100644
--- a/examples/examples.txt
+++ b/examples/examples.txt
@@ -3,4 +3,25 @@
 bsp3.json: "Der /+w1:3,s1 Mann"
 bsp4.json: "(Der /+w1:3,s1 Mann) /+w5 geht"
 bsp5.json: "(Der /+w1:3,s1 Mann) /-w5 geht"
-bsp6.json: "(Der /+w1:3,s1 Mann) /+w5 (geht weg)"
\ No newline at end of file
+bsp6.json: "(Der /+w1:3,s1 Mann) /+w5 (geht weg)"
+
+cosmas1.json:  "Buch"
+cosmas2.json:  "das Buch"						// to demonstrate token sequences
+cosmas3.json:  "das /+w1:3 Buch"				// word-distance constraint
+cosmas4.json:  "das /+w1:3,s1 Buch"  			// combined word-distance and sent-distance constraint
+cosmas5.json:  "(das /+w1:3,s1 Buch) /+w5 Tisch"	// complex distance constraint on sequences
+cosmas6.json:  "(das /+w1:3,s1 Buch) /-w5 Tisch"    // negative distance -> precedence
+cosmas7.json:  "(das /+w1:3,s1 Buch) /+w5 (auf dem Tisch)"
+cosmas8.json:  "Institut für Deutsche Sprache"	// spelling variations: deutsche/Deutsche
+cosmas9.json:  "Institut für deutsche Sprache"  
+cosmas10.json: "Institut für $deutsche Sprache" // finds both
+cosmas11.json: "Institut für &deutsch Sprache"  // finds both if base form (lemma) is annotated
+cosmas12.json: "Institut für /+w2 Sprache"  	// finds institutes for any language
+cosmas13.json: "Institut für %+w1 deutsche Sprach e"  // finds institutes for anything
+cosmas14.json: "Institut für MORPH(A) Sprache"	// finds institutes for any language
+cosmas15.json: "wegen #IN(L) <s>"				// finds 'wegen' at beginning of sentence
+cosmas16.json: "$wegen #IN(L) <s>"				// finds 'wegen' at beginning of sentence, also when capitalised
+cosmas17.json: "#BED($wegen , +sa)"				// equivalent to above
+cosmas18.json: "#BEG(#ELEM(S))" 				// finds every sentence-initial word
+cosmas19.json: "MORPH(V) #IN(L) #ELEM(S)"  		// e.g. questions
+cosmas20.json: "MORPH(V) #IN(R) #ELEM(S)"  		// e.g. subordinate clauses
\ No newline at end of file
diff --git a/src/main/java/de/ids_mannheim/korap/query/serialize/CosmasTree.java b/src/main/java/de/ids_mannheim/korap/query/serialize/CosmasTree.java
index 6aad6f2..a0d6cee 100644
--- a/src/main/java/de/ids_mannheim/korap/query/serialize/CosmasTree.java
+++ b/src/main/java/de/ids_mannheim/korap/query/serialize/CosmasTree.java
@@ -218,9 +218,9 @@
 			
 			// negate field (see above)
 			if (negate) {
-				fieldMap.put("match", "match:"+"ne");
+				fieldMap.put("match", "match:ne");
 			} else {
-				fieldMap.put("match", "match:"+"eq");
+				fieldMap.put("match", "match:eq");
 			}
 			//Step II: decide where to put
 			putIntoSuperObject(token, 1);
@@ -235,13 +235,17 @@
 			
 			fieldMap.put("@type", "korap:term");
 //			fieldMap.put("key", "morph:"+node.getChild(0).toString().replace(" ", "_"));
-			fieldMap.put("key", node.getChild(0).toString().replace(" ", "_"));
+			String[] morphValues = node.getChild(0).toString().split(" ");
+			String pos = morphValues[0];
+			
+			fieldMap.put("key", pos);
+			fieldMap.put("layer", "pos");
 			// make category-specific fieldMap entry
 			// negate field (see above)
 			if (negate) {
-				fieldMap.put("match", "match:"+"ne");
+				fieldMap.put("match", "match:ne");
 			} else {
-				fieldMap.put("match", "match:"+"eq");
+				fieldMap.put("match", "match:eq");
 			}
 //			List<String> morphValues = QueryUtils.parseMorph(node.getChild(0).toStringTree());
 //			System.err.println(morphValues);
@@ -768,7 +772,12 @@
 				"(Der /+w1:3,s1 Mann) /+w5 geht",
 				"(Der /+w1:3,s1 Mann) /-w5 geht",
 				"(Der /+w1:3,s1 Mann) /+w5 (geht weg)",
-				"Tag der $offenen Tür"
+				"Tag der $offenen Tür",
+				"#BED($wegen , sa)",
+				"#BEG(#ELEM(S))",
+				"#BEG(<s>)",
+				"MORPH(V PRES)",
+				"Mond?"
 				};
 		CosmasTree.debug=true;
 		for (String q : queries) {
diff --git a/src/main/java/de/ids_mannheim/korap/query/serialize/QuerySerializer.java b/src/main/java/de/ids_mannheim/korap/query/serialize/QuerySerializer.java
index ff7d432..21e0852 100644
--- a/src/main/java/de/ids_mannheim/korap/query/serialize/QuerySerializer.java
+++ b/src/main/java/de/ids_mannheim/korap/query/serialize/QuerySerializer.java
@@ -3,6 +3,8 @@
 import com.fasterxml.jackson.core.JsonGenerationException;
 import com.fasterxml.jackson.databind.JsonMappingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+
 import de.ids_mannheim.korap.util.QueryException;
 import org.slf4j.LoggerFactory;
 
@@ -23,6 +25,7 @@
 
     public QuerySerializer() {
         mapper = new ObjectMapper();
+        mapper.enable(SerializationFeature.INDENT_OUTPUT);
     }
 
     /**
@@ -45,12 +48,29 @@
 					 * regex
 					 * & field_group
 					 */
-                    "Der Mann",
-    				"Der /+w1:3 Mann",
-    				"Der /+w1:3,s1 Mann",
-    				"(Der /+w1:3,s1 Mann) /+w5 geht",
-    				"(Der /+w1:3,s1 Mann) /-w5 geht",
-    				"(Der /+w1:3,s1 Mann) /+w5 (geht weg)",
+                    "Buch",
+            		"das Buch",
+    				"das /+w1:3 Buch",
+    				"das /+w1:3,s1 Buch",
+    				"(das /+w1:3,s1 Buch) /+w5 Tisch",
+    				"(das /+w1:3,s1 Buch) /-w5 Tisch",
+    				"(das /+w1:3,s1 Buch) /+w5 (auf dem Tisch)",
+    				
+    				
+    				"Institut für Deutsche Sprache",
+    				"Institut für deutsche Sprache",
+    				"Institut für $deutsche Sprache",
+    				"Institut für &deutsch Sprache",
+    				"Institut für /+w2 Sprache",
+    				"Institut für %+w1 deutsche Sprache",
+    				"Institut für MORPH(A) Sprache",
+    				
+    				"wegen #IN(L) <s>",
+    				"$wegen #IN(L) <s>",
+    				"#BED($wegen , +sa)",
+    				"#BEG(#ELEM(S))",
+    				"MORPH(V) #IN(L) #ELEM(S)",
+    				"MORPH(V) #IN(R) #ELEM(S)",
 
             };
         } else {
@@ -61,7 +81,8 @@
             i++;
             try {
                 System.out.println(q);
-                jg.run(q, "cosmas", System.getProperty("user.home") + "/bsp" + i + ".json");
+                String ql = "cosmas";
+                jg.run(q, ql, System.getProperty("user.home") + "/" + ql + i + ".json");
                 System.out.println();
             } catch (NullPointerException npe) {
                 npe.printStackTrace();
diff --git a/src/main/java/de/ids_mannheim/korap/query/serialize/QueryUtils.java b/src/main/java/de/ids_mannheim/korap/query/serialize/QueryUtils.java
index cee10ef..5d9f0ba 100644
--- a/src/main/java/de/ids_mannheim/korap/query/serialize/QueryUtils.java
+++ b/src/main/java/de/ids_mannheim/korap/query/serialize/QueryUtils.java
@@ -134,7 +134,6 @@
 	public static List<String> parseMorph(String stringTree) {
 		
 		ArrayList<String> morph = new ArrayList<String>();
-		System.err.println(stringTree);
 		return morph;
 	}
 
diff --git a/src/test/java/CosmasTreeTest.java b/src/test/java/CosmasTreeTest.java
index 999b328..63bf459 100644
--- a/src/test/java/CosmasTreeTest.java
+++ b/src/test/java/CosmasTreeTest.java
@@ -73,14 +73,29 @@
 	
 	@Test
 	public void testCaseSensitivityFlag() throws QueryException {
-		//TODO ignorieroperator $ http://www.ids-mannheim.de/cosmas2/web-app/hilfe/suchanfrage/eingabe-zeile/syntax/ignorierung.html
+		query="$deutscher";
+		String cs1 = 
+				"{@type=korap:token, wrap={@type=korap:term, caseInsensitive=true, key=deutscher, layer=orth, match=match:eq}}";
+		ct = new CosmasTree(query);
+		map = ct.getRequestMap().get("query").toString();
+		assertEquals(cs1.replaceAll(" ", ""), map.replaceAll(" ", ""));
+		
+		query="$deutscher Bundestag";
+		String cs2 = 
+				"{@type=korap:group, operation=operation:sequence, operands=[" +
+						"{@type=korap:token, wrap={@type=korap:term, caseInsensitive=true, key=deutscher, layer=orth, match=match:eq}}," +
+						"{@type=korap:token, wrap={@type=korap:term, key=Bundestag, layer=orth, match=match:eq}}" +
+					"]}";
+		ct = new CosmasTree(query);
+		map = ct.getRequestMap().get("query").toString();
+		assertEquals(cs2.replaceAll(" ", ""), map.replaceAll(" ", ""));
 	}
 	
 	@Test
 	public void testMORPH() throws QueryException {
 		query="#MORPH(V)";
 		String morph1 = 
-					"{@type=korap:token, wrap={@type=korap:term, key=V, match=match:eq}}";
+					"{@type=korap:token, wrap={@type=korap:term, key=V, layer=pos, match=match:eq}}";
 		ct = new CosmasTree(query);
 		map = ct.getRequestMap().get("query").toString();
 		assertEquals(morph1.replaceAll(" ", ""), map.replaceAll(" ", ""));
diff --git a/src/test/java/PoliqarpPlusTreeTest.java b/src/test/java/PoliqarpPlusTreeTest.java
index b51bc9a..d2ffe72 100644
--- a/src/test/java/PoliqarpPlusTreeTest.java
+++ b/src/test/java/PoliqarpPlusTreeTest.java
@@ -75,6 +75,26 @@
 	}
 	
 	@Test
+	public void testCaseSensitivityFlag() throws QueryException {
+		String query="[orth=deutscher/i]";
+		String cs1 = 
+				"{@type=korap:token, wrap={@type=korap:term, key=deutscher, layer=orth, match=match:eq, caseInsensitive=true}}";
+		ppt = new PoliqarpPlusTree(query);
+		map = ppt.getRequestMap().get("query").toString();
+		assertEquals(cs1.replaceAll(" ", ""), map.replaceAll(" ", ""));
+		
+		query="[orth=deutscher/i][orth=Bundestag]";
+		String cs2 = 
+				"{@type=korap:group, operation=operation:sequence, operands=[" +
+						"{@type=korap:token, wrap={@type=korap:term, key=deutscher, layer=orth, match=match:eq, caseInsensitive=true}}," +
+						"{@type=korap:token, wrap={@type=korap:term, key=Bundestag, layer=orth, match=match:eq}}" +
+					"]}";
+		ppt = new PoliqarpPlusTree(query);
+		map = ppt.getRequestMap().get("query").toString();
+		assertEquals(cs2.replaceAll(" ", ""), map.replaceAll(" ", ""));
+	}
+	
+	@Test
 	public void testElements() throws QueryException {
 		// <s>
 		String elem1 = "{@type=korap:span, key=s}";