B3311331313231311331322331333132313331322331323133313331333133313223223231   >>    B331133131323131133132233133313231333132233132313331333133313331322322323   <<    B3311331313231311331322331333132313331322331323133313331333133313223223233   >>      B3311331313231311331322331333132313331322331323133313331333133313223223232   >>