A.0101 B.1000 C.1010 D.1100
A.BC’D’+B’D+AB’C B.BC’D’+AB’D+ B’CD’ C.B’+C’D’ D.BC’D’+AB’D+B’C’D+B’CD’
A.11100101 B.10011010 C.10011011 D.11100110