diff --git a/py/venv/main/Config.py b/py/venv/main/Config.py
index ab36344..0920ca3 100644
--- a/py/venv/main/Config.py
+++ b/py/venv/main/Config.py
@@ -98,3 +98,31 @@
 D33 = '(A*B*C-(D*E))'
 D34 = '(B+C+D+E-A)'
 D35 = '(C*E-(A+B+D))'
+
+
+# 公式五
+
+A51 = '(C*D-(A+B+E))'
+A52 = '((A+B+E)-(C*D))'
+A53 = '(A*B*D*E+C)'
+A54 = '((C+D)*A-(B+E))'
+A55 = '((B+E)*C-(A*D))'
+
+B51 = '(A+B+C+D-E)'
+B52 = '(B*C*D-(A+E))'
+B53 = '((A+B+D)-(C+E))'
+B54 = '(B*C*D-(A+E))'
+B55 = '((D+C*E)-(A+B))'
+
+C51 = '(A*E-(B+C+D))'
+C52 = '(C*D*E-(A*B))'
+C53 = '(A*C-(B+D+E))'
+C54 = '((A+B*C)-(D*E))'
+C55 = '((D+C*E)-(A+B))'
+
+D51 = '(A*C*E-(B+D))'
+D52 = '(A*B*C-(D*E))'
+D53 = '(A*C*D-(B*E))'
+D54 = '((D+C*E)-(A*B))'
+D55 = '((E+A*D)-(B+C))'
+