C111112111133131121133133313331333133313121111331333132211211121   >>    C11111211113313112113313331333133313331312111133133313221121112   <<    C111112111133131121133133313331333133313121111331333132211211123   >>      C111112111133131121133133313331333133313121111331333132211211122   >>