C3213322333133313113313221211113313331333133313121121123223323123221   >>    C321332233313331311331322121111331333133313331312112112322332312322   <<    C3213322333133313113313221211113313331333133313121121123223323123223   >>      C3213322333133313113313221211113313331333133313121121123223323123222   >>