The answer is that what you request could be done.
For me, it would be a major amount of work (i.e. a couple of month devoted to doing it). I expect that professional Word programmers probably would find it easier, but not trivial. I expect that much would have to be done each time you wanted to change the data in the list.

A combobox allows a drop-down list that you can type in something not found in the list.

The way I would approach this would be to have a data table in Excel and use Mail Merge.