C111112111133131121133133313331333133313331322121111331333133313133313113121221   >>    C11111211113313112113313331333133313331333132212111133133313331313331311312122   <<    C111112111133131121133133313331333133313331322121111331333133313133313113121223   >>      C111112111133131121133133313331333133313331322121111331333133313133313113121222   >>