diff --git a/letters.txt b/letters.txt
index 1c943a9..7a93e87 100644
--- a/letters.txt
+++ b/letters.txt
@@ -1,3 +1,6 @@
 a
 b
-c
\ No newline at end of file
+c
+d
+e
+f
\ No newline at end of file