6 1 4 6 2-3 1-2 4 5-6 2-3 1 1 2 2-3 1-21-2 2 1 6 9 9-11 11 1-2 1 5-6 1 1 4-6 1 1 2 3 1 1 1 1 3-4 1 5-7 2 1 1 3 2-3 5 1 1 2-3 6 1-3 2 3-5 1-2 1-2 1 4 1 4-6 2 1 1-2 1-2 1 1 2 1 2-3 1 1 1-2 3 1 1 1 1 3-5 1 1 1 2 1 1 5-6 4 4 5 1-2 4 1 3-4 1-2 1 1 3 2-3 1 1 6-7 1-2 2 1 2 1-2 1 1 2 1 2-3 3-6 1 14 2-3 3 1-2 3 1 1-2 1 