C11112331312111112111133133313331333133313132211312111133131122212231   >>    C1111233131211111211113313331333133313331313221131211113313112221223   <<    C11112331312111112111133133313331333133313132211312111133131122212233   >>      C11112331312111112111133133313331333133313132211312111133131122212232   >>