C11112331312111112111133133313331333133313331333133313331333131133112211211   >>    C1111233131211111211113313331333133313331333133313331333133313113311221121   <<    C11112331312111112111133133313331333133313331333133313331333131133112211213   >>      C11112331312111112111133133313331333133313331333133313331333131133112211212   >>