B3311331313231311331322331333131133133313233213231333133313113313231322113231   >>    B331133131323131133132233133313113313331323321323133313331311331323132211323   <<    B3311331313231311331322331333131133133313233213231333133313113313231322113233   >>      B3311331313231311331322331333131133133313233213231333133313113313231322113232   >>