C121212231313232233132332313231333132333131313231311331323331323223313231221   >>    C12121223131323223313233231323133313233313131323131133132333132322331323122   <<    C121212231313232233132332313231333132333131313231311331323331323223313231223   >>      C121212231313232233132332313231333132333131313231311331323331323223313231222   >>