diff --git a/py/venv/main/Config.py b/py/venv/main/Config.py
index dbd7951..ab36344 100644
--- a/py/venv/main/Config.py
+++ b/py/venv/main/Config.py
@@ -71,3 +71,30 @@
 D22 = '(A-(B+C+D+E))'
 D23 = '(A*B*C-(D*E))'
 D24 = '(A*B*C-(D+E))'
+
+
+# 公式四
+
+A31 = '(C*D-(A+B+E))'
+A32 = '(A+B+E-(C*D))'
+A33 = '(A-(B+C+D+E))'
+A34 = '(B+C+D+E-A)'
+A35 = '(B*C*D*E-A)'
+
+B31 = '(A+B+C+D-E)'
+B32 = '(B*C*D-(A+E))'
+B33 = '((A+B+D)-(C+E))'
+B34 = '(B*C*D-(A+E))'
+B35 = '((D+C*E)-(A+B))'
+
+C31 = '(A*E-(B+C+D))'
+C32 = '(C*D*E-(A*B))'
+C33 = '(A*C-(B+D+E))'
+C34 = '((A+B*C)-(D*E))'
+C35 = '((D+C*E)-(A+B))'
+
+D31 = '(A*C*E-(B+D))'
+D32 = '(A-(B+C+D+E))'
+D33 = '(A*B*C-(D*E))'
+D34 = '(B+C+D+E-A)'
+D35 = '(C*E-(A+B+D))'