diff --git a/tests/a.txt b/tests/a.txt
index 257cc56..4f6c252 100644
--- a/tests/a.txt
+++ b/tests/a.txt
@@ -1 +1,2 @@
 foo
+foobar
diff --git a/tests/b.txt b/tests/b.txt
index 5716ca5..c494264 100644
--- a/tests/b.txt
+++ b/tests/b.txt
@@ -1 +1,2 @@
 bar
+foobar
diff --git a/tests/c.txt b/tests/c.txt
index 06cab46..79d5a4d 100644
--- a/tests/c.txt
+++ b/tests/c.txt
@@ -1,3 +1,4 @@
 c
 foobar
 test1234
+foobar
diff --git a/tests/d.txt b/tests/d.txt
index 13a80d9..2de8b15 100644
--- a/tests/d.txt
+++ b/tests/d.txt
@@ -1,3 +1,5 @@
 d
 foobar
 foobar
+foobar
+foobar