B3311331313231311331322331333132313331322121133133313331333131132111111211   >>    B331133131323131133132233133313231333132212113313331333133313113211111121   <<    B3311331313231311331322331333132313331322121133133313331333131132111111213   >>      B3311331313231311331322331333132313331322121133133313331333131132111111212   >>