C11112331312111112111133133313331333132322121111331311331333131323221211   >>    C1111233131211111211113313331333133313232212111133131133133313132322121   <<    C11112331312111112111133133313331333132322121111331311331333131323221213   >>      C11112331312111112111133133313331333132322121111331311331333131323221212   >>