I do it differently to you. This is my working though:
Call the women B1,B2,B3,S1,S2,W1,W2,W3 (where B means Bow, S means stroke and W means woman)
- B1 can take one of four spots on the bow side, B2 can then take 3 and B2 can take 2. Therefore total combinations so far is 4x3x2
- S1 can take...