M BC AB CMNA0001 10 00000 000 0 001 010 00 0 110 M=AB+ BC+ AC BC 1000 0110A00011110 00①10(1 0①0 n=abc+abc+abc+abc1 1 1 1 1 1 1 0 1 0 1 0 1 1 0 1 0 0 0 1 0 1 1 1 0 0 1 0 0 1 0 0 1 0 1 0 0 0 0 0 A B C M N 1 0 1 1 1 0 0 0 1 0 A 00 01 11 10 M BC 1 1 0 1 0 0 0 1 0 1 A 00 01 11 10 N BC M = AB+ BC + AC N = ABC+ ABC+ ABC+ ABC _ _ _ _ _ _