B3311331313231311331322331333132333133313223331211331333133313231333131121331   >>    B331133131323131133132233133313233313331322333121133133313331323133313112133   <<    B3311331313231311331322331333132333133313223331211331333133313231333131121333   >>      B3311331313231311331322331333132333133313223331211331333133313231333131121332   >>