B3311331313231311331322331333132333133313223331211331333133311211322231   >>    B331133131323131133132233133313233313331322333121133133313331121132223   <<    B3311331313231311331322331333132333133313223331211331333133311211322233   >>      B3311331313231311331322331333132333133313223331211331333133311211322232   >>