diff --git a/README.md b/README.md
index 0166ff1..c26f3c1 100644
--- a/README.md
+++ b/README.md
@@ -6,4 +6,5 @@ Example cases
 
 1. 1080p(FHD) -> 2160p(4K)
 2. 1080(FHD) -> 2160p(4K)+1440(QHD)
-3. 480p -> 1080p
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+3. 480p -> 1080p
+4. 720 -> 1080p
\ No newline at end of file