C111112111133131121133133313331333133313331312111133133313331333112132233121   >>    C11111211113313112113313331333133313331333131211113313331333133311213223312   <<    C111112111133131121133133313331333133313331312111133133313331333112132233123   >>      C111112111133131121133133313331333133313331312111133133313331333112132233122   >>