B3311331313231311331322331333132313231323331333131211113313221223323231   >>    B331133131323131133132233133313231323132333133313121111331322122332323   <<    B3311331313231311331322331333132313231323331333131211113313221223323233   >>      B3311331313231311331322331333132313231323331333131211113313221223323232   >>