C12322112223313133313223313131323132313232233131133132312312111   >>    C1232211222331313331322331313132313231323223313113313231231211   <<    C12322112223313133313223313131323132313232233131133132312312113   >>      C12322112223313133313223313131323132313232233131133132312312112   >>