B3311331313231311331322331333132333132311211331333132322331323112121   >>    B331133131323131133132233133313233313231121133133313232233132311212   <<    B3311331313231311331322331333132333132311211331333132322331323112123   >>      B3311331313231311331322331333132333132311211331333132322331323112122   >>