I have figured out my letter positions, however I have run into a few problems. It made sense for the thumb-thumb combo to be a space, however this meant that there was only 24 available chords for 26 letters. At this point I am actually going to leave out the letters Q and Z as they are the least frequently used. Hopefully I will be able to add 3 finger chords which will allow for numbers, symbols, and punctuation. One step at a time.