C111112111133131121133133313331333121111133313331333133311332233132321123121   >>    C11111211113313112113313331333133312111113331333133313331133223313232112312   <<    C111112111133131121133133313331333121111133313331333133311332233132321123123   >>      C111112111133131121133133313331333121111133313331333133311332233132321123122   >>