c0 = {18:9:9:6:3:33} (18, 9, 4)
c1 = {16:5:16:8:8:34} (16, 5, 5)
c2 = {26:1:25:4:21:31} (26, 1, 3)
c3 = {8:2:17:6:11:27} (8, 2, 4)
c4 = {33:1:24:3:21:29} (33, 1, 2)
c5 = {32:2:16:4:12:24} (32, 2, 3)
c6 = {43:1:23:1:22:26} (43, 1, 1)
c = 24^2 - 17^2 = 7 * 41 = 287