diff --git a/12.py b/12.py
index 9960fb4..85013b0 100644
--- a/12.py
+++ b/12.py
@@ -13,10 +13,9 @@ b = ['袁术','夏侯惇','曹操','关羽']
 c = ['颜良','文丑']
 b.pop(3)
 
-a.append("关羽")
 
-a.insent(2,"关羽")
+a.append("关羽")
 
-a.estend(c)
+a.extend(c)
 
 print(a)
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