C11112331312111112111133133313331333133313331333133313331333131121312311   >>    C1111233131211111211113313331333133313331333133313331333133313112131231   <<    C11112331312111112111133133313331333133313331333133313331333131121312313   >>      C11112331312111112111133133313331333133313331333133313331333131121312312   >>