B3311331313231311331322331333132333132311211331333132322331323121221   >>    B331133131323131133132233133313233313231121133133313232233132312122   <<    B3311331313231311331322331333132333132311211331333132322331323121223   >>      B3311331313231311331322331333132333132311211331333132322331323121222   >>