If you are actually merging a single record with 32 fields, then you should
be able to insert the first 16 fields exactly where you want and the other
16 fields exactly where you want.

But if your "record with 32 different file names" is really "32 records,
each with a file name" then you will probably need to insert multiple copies
of the same field ( e.g. { MERGEFIELD myfilename } or <<myfilename>> ), and
put a { NEXT } (<<Next record>>) field before each one except the first.

If neither of those describes what you are actually attempting, please try
to spell out exactly what you have in your data source and exactly what
output you are trying to create.

--
Peter Jamieson - Word MVP
Word MVP web site http://www.mvps.org/word