diff --git a/src/test/resources/simple.conllu b/src/test/resources/simple.conllu
index 2e52539..5a907cc 100644
--- a/src/test/resources/simple.conllu
+++ b/src/test/resources/simple.conllu
@@ -1,17 +1,31 @@
-# text_id = TST_TST.00000
+# text_id = TST_TST.00001
+# empty texts are expected to count
+
+# text_id = TST_TST.00002
 1	ich	ich	PPER	PPER	_	_	_	_	1
 2	bin	sein	VAFIN	VAFIN	_	_	_	_	1.000000
 3	alex	alex	NE	NE	_	_	_	_	0.565630
 4	.	.	$.	$.	_	_	_	_	1.000000
 
-# text_id = TST_TST.00001
+# text_id = TST_TST.00003
 1	alex	alex	NE	NE	_	_	_	_	0.565630
 2	bin	sein	VAFIN	VAFIN	_	_	_	_	1.000000
 3	ich	ich	PPER	PPER	_	_	_	_	1
 4	.	.	$.	$.	_	_	_	_	1.000000
 
-# text_id = TST_TST.00002
+# text_id = TST_TST.00004
+# make sure that an empty text header does no harm
+
+# text_id = TST_TST.00005
 1	ich	ich	PPER	PPER	_	_	_	_	1
 2	heiße	heißen	VAFIN	VAFIN	_	_	_	_	1.000000
 3	alex	alex	NE	NE	_	_	_	_	0.565630
 4	.	.	$.	$.	_	_	_	_	1.000000
+
+# text_id = TST_TST.00006
+# make sure that an empty text header does no harm
+
+# text_id = TST_TST.00007
+# in the unigrams we should have 7 start and end tags
+
+