C3123121111121111131213331333133313331333131133133313331323222211   >>    C312312111112111113121333133313331333133313113313331333132322221   <<    C3123121111121111131213331333133313331333131133133313331323222213   >>      C3123121111121111131213331333133313331333131133133313331323222212   >>