C3123121111331312121111331333133313331333121333131133133323223322231   >>    C312312111133131212111133133313331333133312133313113313332322332223   <<    C3123121111331312121111331333133313331333121333131133133323223322233   >>      C3123121111331312121111331333133313331333121333131133133323223322232   >>