B3311331313231311331322331333132313331322121133133313331333121111133311213111   >>    B331133131323131133132233133313231333132212113313331333133312111113331121311   <<    B3311331313231311331322331333132313331322121133133313331333121111133311213113   >>      B3311331313231311331322331333132313331322121133133313331333121111133311213112   >>