diff --git a/diy4.py b/diy4.py
index 5f276a4..0964c1a 100644
--- a/diy4.py
+++ b/diy4.py
@@ -12,6 +12,7 @@ for i in range(len(message)):
     str3=random.choice(key)
     baocuen=baocuen+str1+str2+str3
 baocuen=list(baocuen)
-baocuen.insert(5,ganrao)
+charu=random.randint(0,len(baocuen))
+baocuen.insert(charu,ganrao)
 baocuen=" ".join(baocuen)
 print(baocuen)
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