C3213322333133313113313221211113313331333133313121121123222211312121   >>    C321332233313331311331322121111331333133313331312112112322221131212   <<    C3213322333133313113313221211113313331333133313121121123222211312123   >>      C3213322333133313113313221211113313331333133313121121123222211312122   >>