B3311331313231311331322331333131133132311233132313331333132322121111332223311   >>    B331133131323131133132233133313113313231123313231333133313232212111133222331   <<    B3311331313231311331322331333131133132311233132313331333132322121111332223313   >>      B3311331313231311331322331333131133132311233132313331333132322121111332223312   >>