Default [Q] Is it possible to add more words to default HTC Sense Input/language pack?

Hi, I'm using androids default HTC Sense Input 6 keyboard with predictive text and it's so frustrating. There are so many nonsense words suggested in predictive text and only half the time when I need "me" or "no" do they appear, among other 2 letter words - and these words can't be added to the personal dictionary. And then there's the automatic [space] after every selection!! Is it possible to decompile and add words and then re install? Would it be the HTC Sense Input apk or a language pack?

Sent from my HTC One using XDA Premium 4 mobile app