8 -8 7 -6 -6 6 5 -6 -6 -6 -6 -6 6 6 6 -6 -7 7 -8 8 -8 7 -6 -6 6 5 -6 -6 -6 -6 -6 8 8 8 -8 7 -7 -6 8 -8 7 -6 -6 6 5 -6 -6 -6 -6 7 -7 -6 6 -6 -7 6 -6 8 -8 7 -6 -6 6 5 -6 -6 -6 -6 -6 8 8 8 -8 7 -7 -6 -6 -7 7 -7 7 8 -8 -8 7- 8- 8 7 -6 -6 -7 6 -6 -7 8 -8 7 -6 -6 6 5 -6 -6 -6 -6 -6 8 8 8 -8 7 -7 -6 x2