Hi, Sorry for the lack of explanation. it was a fun project. I wanted to simulate agents who talking and learning new words from themselves. Each island has 12 agents, and there are gates of islands for travelling between of them. In this way, the agents can spread their words to other islands.
Edit: I'm just replacing a vowel or const on a word for sound change. It may be better with natural sound change processes. I'll work on that. Thank you!
Also... did you consider using known sound change processes? https://en.wikipedia.org/wiki/Sound_change