[[-2,-1/11*x+3/11],[-2,-1/11*x-3/11],[-2,-1/2*x+1],[-2,-1/2*x+1/2],[2,-1/2*x+3/2],[-2,-1/2*x-1/2],[-2,-1/2*x-1/4],[-2,-1/2*x],[2,-1/20*x+1/20],[2,-1/22*x+19/22],[-2,-1/22*x+4/11],[-2,-1/3*x+1],[2,-1/4*x+1],[-2,-1/5*x+1/2],[-2,-1/6*x+1/3],[-2,-1/6*x+2/15],[-2,1/11],[-2,1/54*x+1/135],[2,1/6*x-1/3]]