C11112331312111112111133133313331333133313331333133313331333131133112131211   >>    C1111233131211111211113313331333133313331333133313331333133313113311213121   <<    C11112331312111112111133133313331333133313331333133313331333131133112131213   >>      C11112331312111112111133133313331333133313331333133313331333131133112131212   >>