Be aware of the different hand shapes
(i) Balanced 4-3-3-3, 4-4-3-2. 5-3-3-2(ii) Single-suited 6-3-2-2, 7-3-2-1(iii) Two-suited 5-4-3-1, 5-5-2-1(iv) Three-suited 4-4-4-1, 4-4-5-0