C121212123112323223313132322331323133313112331311221123231323123111   >>    C12121212311232322331313232233132313331311233131122112323132312311   <<    C121212123112323223313132322331323133313112331311221123231323123113   >>      C121212123112323223313132322331323133313112331311221123231323123112   >>