B3311331313231311331322331333131133132311233132313331333132322122211   >>    B331133131323131133132233133313113313231123313231333133313232212221   <<    B3311331313231311331322331333131133132311233132313331333132322122213   >>      B3311331313231311331322331333131133132311233132313331333132322122212   >>