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+
+ (A + B' + C) ( A + B + D) (A' + C' + D')
+
+ = [A + (B' + C)(B + D)](A' + C' + D'
+
+ = (A + B'D + BC)(A' + C' + D')
+
+ = A ( C'+ D') + A'(B'D + BC )
+
+ = AC' + AD' + A'B'D + A'BC