[-2,-1,0,0]
[-1,-1,0,0]
[-1,0,0,0]
[0,-1,0,0]
[0,0,-2,-1]
[0,0,-1,-1]
[0,0,-1,0]
[0,0,0,-1]
[0,0,0,1]
[0,0,1,0]
[0,0,1,1]
[0,0,2,1]
[0,1,0,0]
[1,0,0,0]
[1,1,0,0]
[2,1,0,0]