C111112111133131121133133313331333133313331322121111331333133313232211211211   >>    C11111211113313112113313331333133313331333132212111133133313331323221121121   <<    C111112111133131121133133313331333133313331322121111331333133313232211211213   >>      C111112111133131121133133313331333133313331322121111331333133313232211211212   >>