C11112331312111112111133133313331333133313331333112221323223331   >>    C1111233131211111211113313331333133313331333133311222132322333   <<    C11112331312111112111133133313331333133313331333112221323223333   >>      C11112331312111112111133133313331333133313331333112221323223332   >>