x x x x x x x x x x x x
x x 0 0 x x x 0 0 x x
x 0 0 0 0 0 0 0 0 x
x 0 0 0 0 0 0 0 0 x
x x 0 0 0 0 0 0 x x
x x x 0 0 0 0 0 x x
x x x x 0 0 0 x x x
x x x x x 0x x x x x
x x 0 0 x x x 0 0 x x
x 0 0 0 0 0 0 0 0 x
x 0 0 0 0 0 0 0 0 x
x x 0 0 0 0 0 0 x x
x x x 0 0 0 0 0 x x
x x x x 0 0 0 x x x
x x x x x 0x x x x x
