B3311331313231311331322331333132313132313331323223313231333132231211   >>    B331133131323131133132233133313231313231333132322331323133313223121   <<    B3311331313231311331322331333132313132313331323223313231333132231213   >>      B3311331313231311331322331333132313132313331323223313231333132231212   >>