C111112111133131121133133313331333133313331323221211113313231333133313232323331   >>    C11111211113313112113313331333133313331333132322121111331323133313331323232333   <<    C111112111133131121133133313331333133313331323221211113313231333133313232323333   >>      C111112111133131121133133313331333133313331323221211113313231333133313232323332   >>