diff --git a/README.md b/README.md
index 6520559390477d15c5ab3439c32f9f9796397e14..d73fd336fed8599c5100347a919fb1a4e97ca5e7 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,10 @@
 
 ## printf
 
-`color`
+`1`
+``2``
+```3```
+````4````
 
 ### stdio.h