C121212231313232233131323223313231323132313331323131133132313231221   >>    C12121223131323223313132322331323132313231333132313113313231323122   <<    C121212231313232233131323223313231323132313331323131133132313231223   >>      C121212231313232233131323223313231323132313331323131133132313231222   >>