99.1
2    12 13 11   0 0 0   0 0 0
2    9 10 8   0 0 0   0 0 0
2    6 7 0   14 15 0   0 0 0
2    4 5 3   0 0 0   0 0 0
2    1 2 0   17 16 0   0 0 0