diff --git a/pages/Swap/Math401/Math401_N1.md b/pages/Swap/Math401/Math401_N1.md
index b8e4e9a..a4501ac 100644
--- a/pages/Swap/Math401/Math401_N1.md
+++ b/pages/Swap/Math401/Math401_N1.md
@@ -62,6 +62,3 @@ The multiplication table of $S_3$ is:
 
 ### Symmetric Generating Set
 
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