C121212123112323223313132322331323132323213231311331322132323221   >>    C12121212311232322331313232233132313232321323131133132213232322   <<    C121212123112323223313132322331323132323213231311331322132323223   >>      C121212123112323223313132322331323132323213231311331322132323222   >>