C1212122313132322331323323132313231232313232233131323132313132312111   >>    C121212231313232233132332313231323123231323223313132313231313231211   <<    C1212122313132322331323323132313231232313232233131323132313132312113   >>      C1212122313132322331323323132313231232313232233131323132313132312112   >>