C11112331312111112111133133313331333132322121111331312113313331333113231   >>    C1111233131211111211113313331333133313232212111133131211331333133311323   <<    C11112331312111112111133133313331333132322121111331312113313331333113233   >>      C11112331312111112111133133313331333132322121111331312113313331333113232   >>