I didn't use a family. In my final version of the game I used arrays that that stored the letters.
<img src="http://content.screencast.com/users/ArcadEd/folders/Jing/media/6ee23e4d-04b0-40ef-bcdd-244835e07472/2013-03-05_0855.png" border="0" />
Then using tokenat I populate the Text Boxes.
<img src="http://content.screencast.com/users/ArcadEd/folders/Jing/media/c7ade66e-d08d-474c-9e47-31a82d0f73f5/2013-03-05_0858.png" border="0" />
This really wasn't an easy project at first, especially if you are just learning construct.
The way I did it was such that I could easily add levels just by updating the 3 main global variables, or even have those global variables updated via an ajax/php action.