C121212231313232233131323223313231323132313331323131133132212131   >>    C12121223131323223313132322331323132313231333132313113313221213   <<    C121212231313232233131323223313231323132313331323131133132212133   >>      C121212231313232233131323223313231323132313331323131133132212132   >>