B3311331313231311331322331333132313233313231333131133133313232133311233321   >>    B331133131323131133132233133313231323331323133313113313331323213331123332   <<    B3311331313231311331322331333132313233313231333131133133313232133311233323   >>      B3311331313231311331322331333132313233313231333131133133313232133311233322   >>