diff --git a/buggy.py b/buggy.py
--- a/buggy.py
+++ b/buggy.py
@@ -11,7 +11,7 @@
         l=[]
         for i in range(len(list2)):
             d2[list2[i]]=i
-          for i in range(len(list1)):
+        for i in range(len(list1)):
             if list1[i] in d2:
                 l.append([i+d2[list1[i]],list1[i]])
         l1=[]
@@ -22,4 +22,4 @@
                 l1.append(l[i][1])
             else:
                 break
-        return l1
+        return l1