B3311331313231311331322331333132313132313331323223313331323132322331211   >>    B331133131323131133132233133313231313231333132322331333132313232233121   <<    B3311331313231311331322331333132313132313331323223313331323132322331213   >>      B3311331313231311331322331333132313132313331323223313331323132322331212   >>