C3213322333133313113313221211113313331333133313121121123222221233132211   >>    C321332233313331311331322121111331333133313331312112112322222123313221   <<    C3213322333133313113313221211113313331333133313121121123222221233132213   >>      C3213322333133313113313221211113313331333133313121121123222221233132212   >>