I have two different lists, one consists of list of random 12 dates on which I want to see sales
the second one consist of Unique Product ID the vendor sells. 

I want to copy these dates in multiples of length of the second list. Is there any easier way to do that? 

Thanks for your help.

List A : Date 

```
1. 1/1/20
2. 1/2/20
3. 1/3/20
4. 1/4/20
5. 1/5/20
6. 1/6/20
7. 1/7/20
8. 1/8/20
9. 1/9/20
10. 1/10/20

```

List B: Product ID:

```
1. BOM-12345
2. PEN-98765
3. BUN-45785

```

Now I want to copy these dates in front of the Product ID for 10 times per product ID. 

Expected Output:

```
1. BOM-12345   1/1/20
2. BOM-12345   1/2/20
...                   ...
10. BOM-12345 1/10/20
11. PEN-98765  1/1/20
..     ..
20. PEN-98765 1/10/20
..    ..
30  BUN-45785 1/10/20

```