B3311331313231311331322331333132313331322121133133313331333132222213311   >>    B331133131323131133132233133313231333132212113313331333133313222221331   <<    B3311331313231311331322331333132313331322121133133313331333132222213313   >>      B3311331313231311331322331333132313331322121133133313331333132222213312   >>