A

G is the father of E, E is the husband of H, K is husband of L, and H is the mother of K.

B

E is the father of F, H is the husband of L, F is the husband of G, and G is the mother of H.

C

F is the father of G, E is the brother of G, G is the mother of H, H is the husband of K, and K is the mother of E.

D

K is the husband of H, E is the father of K, L is the daughter of H and married to F.