1
(i) ABC
(ii) ACD
(iii) AC
(iv) ABCD

2 
(i) C
(ii) D
(iii) C
(iv) B

3
(i) A
(ii) B
(iii) B
(iv) ACD
(v) AB

4
(i) AD
(ii) AC
(iii) A
(iv) BC
(v) A

5
(i) BC
(ii) CD