C11112331312111112111133133313331333133313331333133313331333131211213221   >>    C1111233131211111211113313331333133313331333133313331333133313121121322   <<    C11112331312111112111133133313331333133313331333133313331333131211213223   >>      C11112331312111112111133133313331333133313331333133313331333131211213222   >>