B3311331313231311331322331333132313331323131323223313113311222121   >>    B331133131323131133132233133313231333132313132322331311331122212   <<    B3311331313231311331322331333132313331323131323223313113311222123   >>      B3311331313231311331322331333132313331323131323223313113311222122   >>