diff --git a/c.txt b/c.txt
new file mode 100644
index 0000000..c86d89d
--- /dev/null
+++ b/c.txt
@@ -0,0 +1 @@
+This is a third file.
diff --git a/d.txt b/d.txt
new file mode 100644
index 0000000..70c3d80
--- /dev/null
+++ b/d.txt
@@ -0,0 +1 @@
+This is a fourth file.