diff --git a/intermediate/mutation_codilis.py b/intermediate/mutation_codilis.py
new file mode 100644
index 0000000..813bedb
--- /dev/null
+++ b/intermediate/mutation_codilis.py
@@ -0,0 +1,32 @@
+def mutation(s):
+    alpha = []
+    s[0] = s[0].lower()
+    s[1] = s[1].lower()
+    for i in range(2):
+        alpha.append([0 for _ in range(26)])
+
+    if(len(s[0]) < len(s[1])):
+        return False
+
+    for i in range(len(s[1])):
+        alpha[0][ord(s[0][i])-97] += 1
+        alpha[1][ord(s[1][i])-97] += 1
+   
+    for j in range(i, len(s[0])):
+        alpha[0][ord(s[0][j])-97] += 1
+
+    for i in range(26):
+        if alpha[1][i] > alpha[0][i]:
+            return False
+
+    return True
+
+
+Test = [["hello", "Hello"],
+        ["hello", "hey"],
+        ["Alien", "line"],
+        ['hel', 'heel'],
+        ['heloes', 'hello']]
+
+for test in Test:
+    print(mutation(test))