C111112111133131121133133313331333133313123221211113313331322331333231123121   >>    C11111211113313112113313331333133313331312322121111331333132233133323112312   <<    C111112111133131121133133313331333133313123221211113313331322331333231123123   >>      C111112111133131121133133313331333133313123221211113313331322331333231123122   >>