B3311331313231311331322331333132313132313331323223313331311331312121   >>    B331133131323131133132233133313231313231333132322331333131133131212   <<    B3311331313231311331322331333132313132313331323223313331311331312123   >>      B3311331313231311331322331333132313132313331323223313331311331312122   >>