C11112331312111112111133133313331333133313331333133313331333131121121133121   >>    C1111233131211111211113313331333133313331333133313331333133313112112113312   <<    C11112331312111112111133133313331333133313331333133313331333131121121133123   >>      C11112331312111112111133133313331333133313331333133313331333131121121133122   >>