B3311331313231311331322331333132313132313331323223313223313332211   >>    B331133131323131133132233133313231313231333132322331322331333221   <<    B3311331313231311331322331333132313132313331323223313223313332213   >>      B3311331313231311331322331333132313132313331323223313223313332212   >>