C11112331312111112111133133313331333133313331333133313331211113313111123323221   >>    C1111233131211111211113313331333133313331333133313331333121111331311112332322   <<    C11112331312111112111133133313331333133313331333133313331211113313111123323223   >>      C11112331312111112111133133313331333133313331333133313331211113313111123323222   >>