C3213322333133313113313221211113313331333133313121121123212322121   >>    C321332233313331311331322121111331333133313331312112112321232212   <<    C3213322333133313113313221211113313331333133313121121123212322123   >>      C3213322333133313113313221211113313331333133313121121123212322122   >>