diff --git a/matrix_test.go b/matrix_test.go
index e7aa154..cea4acc 100644
--- a/matrix_test.go
+++ b/matrix_test.go
@@ -802,6 +802,34 @@
 	assert.Equal(tokens[10], ".")
 	assert.Equal(11, len(tokens))
 
+	// z.B.
+	tokens = ttokenize(mat, w, "Dies sind z.B. zwei Wörter - z. B. auch.")
+	assert.Equal(tokens[0], "Dies")
+	assert.Equal(tokens[1], "sind")
+	assert.Equal(tokens[2], "z.")
+	assert.Equal(tokens[3], "B.")
+	assert.Equal(tokens[4], "zwei")
+	assert.Equal(tokens[5], "Wörter")
+	assert.Equal(tokens[6], "-")
+	assert.Equal(tokens[7], "z.")
+	assert.Equal(tokens[8], "B.")
+	assert.Equal(tokens[9], "auch")
+	assert.Equal(tokens[10], ".")
+	assert.Equal(11, len(tokens))
+
+	// Single quote handling
+	tokens = ttokenize(mat, w, "Es heißt 'Leitungssportteams' und nicht anders.")
+	assert.Equal(tokens[0], "Es")
+	assert.Equal(tokens[1], "heißt")
+	assert.Equal(tokens[2], "'")
+	assert.Equal(tokens[3], "Leitungssportteams")
+	assert.Equal(tokens[4], "'")
+	assert.Equal(tokens[5], "und")
+	assert.Equal(tokens[6], "nicht")
+	assert.Equal(tokens[7], "anders")
+	assert.Equal(tokens[8], ".")
+	assert.Equal(9, len(tokens))
+
 	/*
 		@Test
 		public void englishTokenizerSeparatesEnglishContractionsAndClitics () {