C11112331312111112111133133313331333132212111133133313331333131121211211   >>    C1111233131211111211113313331333133313221211113313331333133313112121121   <<    C11112331312111112111133133313331333132212111133133313331333131121211213   >>      C11112331312111112111133133313331333132212111133133313331333131121211212   >>