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