C121212231313232233131323223313231323132313331323131133132322221   >>    C12121223131323223313132322331323132313231333132313113313232222   <<    C121212231313232233131323223313231323132313331323131133132322223   >>      C121212231313232233131323223313231323132313331323131133132322222   >>