B3311331313231311331322331333132313232233131323132333132321112121   >>    B331133131323131133132233133313231323223313132313233313232111212   <<    B3311331313231311331322331333132313232233131323132333132321112123   >>      B3311331313231311331322331333132313232233131323132333132321112122   >>