C12322112223313133313223313131323132313232233131133131323132211   >>    C1232211222331313331322331313132313231323223313113313132313221   <<    C12322112223313133313223313131323132313232233131133131323132213   >>      C12322112223313133313223313131323132313232233131133131323132212   >>