{12: 1, 18: 1}
2 12
{12: 1, 18: 1, 1: 2, 2: 2}
15 18
{12: 2, 18: 1, 1: 2, 2: 2, 3: 3, 15: 2}
17 18
{12: 3, 18: 1, 1: 3, 2: 3, 3: 4, 15: 3, 17: 3}
6 12
{12: 3, 18: 1, 1: 3, 2: 3, 3: 4, 15: 3, 17: 3, 5: 5, 6: 5}
{12: 3, 18: 1, 1: 3, 2: 3, 3: 5, 15: 3, 17: 3, 5: 6, 6: 5}
11 12
{12: 3, 18: 1, 1: 3, 2: 4, 3: 6, 15: 3, 17: 3, 5: 7, 6: 6, 11: 6}
{12: 4, 18: 1, 1: 3, 2: 5, 3: 7, 15: 3, 17: 3, 5: 8, 6: 7, 11: 7}
{12: 5, 18: 2, 1: 3, 2: 5, 3: 7, 15: 4, 17: 4, 5: 8, 6: 7, 11: 8, 9: 8}
14 15
{12: 6, 18: 2, 1: 3, 2: 5, 3: 7, 15: 4, 17: 4, 5: 8, 6: 7, 11: 9, 9: 9, 14: 6}
9