B3311331313231311331322331333132313331322121133133313331333112121111123233311   >>    B331133131323131133132233133313231333132212113313331333133311212111112323331   <<    B3311331313231311331322331333132313331322121133133313331333112121111123233313   >>      B3311331313231311331322331333132313331322121133133313331333112121111123233312   >>