Vertical Mailmerge

I have data coming into my mailmerge tags in a format similar to:
1
2
3
4
5
....etc

I want to have word convert the data however into:
1 2 3 4 5 ...etc

I've tried using /v in my merge tag however this only changes the text into Asian script
The data is being presented in a table something like this:

Line 1	{Tag 1}
line 2	{Tag 2}
line 3	{tag 3}

What i need to know, is how to convert the merge field to keep the text presented vertically aligned allowing a horizontal table?
I dont want to covert the layour of the table if i can help it as this will complicate forms that I am creating.



For background, the data is being presented via a csv file generated in an oracle database.
the merge fields are receiving data something like this:
Tag1 = 1
2
3
4
5
6
tag10 = text here
tag2 = 1
2
3
4
5
6
7
tag5 = more text




Thanks all.