(1,0)/(-3,0)/(-1,-1)/(4,1)/(-1,0)
(0,-1)/(1,1)/(1,0)
(1,0)/(3,0)/(3,0)/(-1,-1)/(-2,1)/(-4,-1)/(1,0)
(0,-1)/(3,0)/(3,0)/(1,1)/(-3,0)/(-3,0)/
