B3311331313231311331322331333132313231323331333131123313331323311232322331   >>    B331133131323131133132233133313231323132333133313112331333132331123232233   <<    B3311331313231311331322331333132313231323331333131123313331323311232322333   >>      B3311331313231311331322331333132313231323331333131123313331323311232322332   >>