C3213322333133313113313221211113313331333133313121121123231233233121   >>    C321332233313331311331322121111331333133313331312112112323123323312   <<    C3213322333133313113313221211113313331333133313121121123231233233123   >>      C3213322333133313113313221211113313331333133313121121123231233233122   >>