diff --git a/a.txt b/a.txt
index 2e65efe..eb49652 100644
--- a/a.txt
+++ b/a.txt
@@ -1 +1 @@
-a
\ No newline at end of file
+ac
\ No newline at end of file
diff --git a/d.txt b/d.txt
index c59d9b6..f6405cd 100644
--- a/d.txt
+++ b/d.txt
@@ -1 +1 @@
-d
\ No newline at end of file
+dc
\ No newline at end of file