|A) ABF||B) ABD|
|C) BFC||D) HEW|
D is father of A and grandfather of F. So, A is father of F.
Thus, D and A are the two fathers. C is the sister of F So, C is the daughter of A.
Since there is only one mother, it is evident that E is the wife of A and hence the mother of C and F.
So, B is brother of A There are three brothers. So, F is the brother of C.
Clearly, B and A are brothers. F is the brother of C So, three brothers are A, B, F.