C1212122313132322331323323132313231232313232233131323132313231321211   >>    C121212231313232233132332313231323123231323223313132313231323132121   <<    C1212122313132322331323323132313231232313232233131323132313231321213   >>      C1212122313132322331323323132313231232313232233131323132313231321212   >>