C1212122313132322331313232233132313331323211232321113231311233331   >>    C121212231313232233131323223313231333132321123232111323131123333   <<    C1212122313132322331313232233132313331323211232321113231311233333   >>      C1212122313132322331313232233132313331323211232321113231311233332   >>