C11112331312111112111133133313331333133313132211312111133131133121111332233131   >>    C1111233131211111211113313331333133313331313221131211113313113312111133223313   <<    C11112331312111112111133133313331333133313132211312111133131133121111332233133   >>      C11112331312111112111133133313331333133313132211312111133131133121111332233132   >>