(1) :A, C, D, E
(2) :A, C, E
(3) :C, D, E
(4) :A, C, D, E
(5) :B, C
(6) :A, C, E
(7) :A, B, C, D
(8) :A, B, D, E
(9) :A,C,D,E
(10) :A, C, D, E
(11) :A, B, C
(12) :A, C
(13) :A, C, E
(14) :A, E
(15) :B, C, D
(16) :B,C,E
(17) :A, B, C, E
(18) :A, B
(19) :D, E
(20) :A, C, D