C111112111133131121133133313331333133313331323133313331333133313231333232133111   >>    C11111211113313112113313331333133313331333132313331333133313331323133323213311   <<    C111112111133131121133133313331333133313331323133313331333133313231333232133113   >>      C111112111133131121133133313331333133313331323133313331333133313231333232133112   >>