sp S 1 sp S 4 sp S 9 sp S 16 sp A 1 sp A 4 sp A 9 sp A 16 sp A 25 sp A 36 sp A 49 sp A 64 sp A 81 sp A 100 sp A 121 sp B 1 sp B 4 sp B 9 sp B 16 sp B 25 sp B 36 sp B 49 sp B 64 sp B 81 sp B 100 sp B 121 sp C 1 sp C 4 sp C 9 sp C 16 sp C 25 sp C 36 sp C 49 sp C 64 sp C 81 sp C 100 sp C 121