C12322112223313133313223313131323132313232233131133131323221211   >>    C1232211222331313331322331313132313231323223313113313132322121   <<    C12322112223313133313223313131323132313232233131133131323221213   >>      C12322112223313133313223313131323132313232233131133131323221212   >>