B3311331313231311331322331333132313331323133313233313331311331333132211212231   >>    B331133131323131133132233133313231333132313331323331333131133133313221121223   <<    B3311331313231311331322331333132313331323133313233313331311331333132211212233   >>      B3311331313231311331322331333132313331323133313233313331311331333132211212232   >>