B3311331313231311331322331333132313331322121133133313331333211231   >>    B331133131323131133132233133313231333132212113313331333133321123   <<    B3311331313231311331322331333132313331322121133133313331333211233   >>      B3311331313231311331322331333132313331322121133133313331333211232   >>