B3311331313231311331322331333132313233313232233133313331311112121   >>    B331133131323131133132233133313231323331323223313331333131111212   <<    B3311331313231311331322331333132313233313232233133313331311112123   >>      B3311331313231311331322331333132313233313232233133313331311112122   >>