C121212231313232233131323223313231323132313331323131133132211231   >>    C12121223131323223313132322331323132313231333132313113313221123   <<    C121212231313232233131323223313231323132313331323131133132211233   >>      C121212231313232233131323223313231323132313331323131133132211232   >>