2. S 2, Q 4, O 5, R 3, R 1, S 1, T 1, S 3, T 4, T 3, S 4, or S 2, R 1, R 4, R 3, Q 4, S 4, S 3.
3. B 19, C 19, C 18, A 19, A 17.
4. A 1, D 1, B 1.
5. B 1, B 2, A 1, E 1, C 1.
6. C 14, E 18, C 18, E 17, B 17, C 16, A 17, A 16, B 19 or C 14, C 18, E 18, B 18, C 16, C 17, A 16, A 15, A 17, B 15, C 19, B 19, A 18 or C 14, C 18, E 18, C 16, B 19, C 19, B 18, B 15, A 15.
7. S 18, R 18, S 19, R 19, S 17, R 17, S 15.
8. T 5, T 4, R 4, S 4, S 2, S 3, T 2.
9. B 2, A 2, C 2, D 1, A 4, A 3, A 5, B 3, B 1, D 4, C 1 or B 2, B 3, C 2, D 1, A 2, B 1, A 4, A 3, D 4.
10. A 15, A 17, D 18, C 16, A 16, B 16, B 18 or A 15, B 16, D 18.
11. R 19, P 14, O 13, O 17, N 18, R 17, P 19.