B3311331313231311331322331333132313331322331323133313331311331213311221   >>    B331133131323131133132233133313231333132233132313331333131133121331122   <<    B3311331313231311331322331333132313331322331323133313331311331213311223   >>      B3311331313231311331322331333132313331322331323133313331311331213311222   >>