square-1

EP

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

(y) / (3,3) / (-1,0) / (2,-4) / (4,-2) / (0,-2) / (-4,2) / (1,-5) / (3,0) / (3,3) / (3,0)

(y2) / (3,0) / (1,0) / (1,0) / (0,-3) / (-3,0) / (-3,0) / (1,0) / (3,0) / (-1,0)

(y2) (1,0) / (-3,0) / (-1,0) / (0,3) / (1,0) / (3,0) / (-1,0) / (0,-3) /