Protolang

I created a protolang (consisting mainly of phonology and inflections) to ensure realistic mutations.

Source: wiktionary

Then at one point I wanted to add head-marking to the language to mark tenses. In my initial sketch, this head-marking would have features of a "real" verb, a kind of calcified form from an ancestral verb in the protolang, kinda like how English uses "was" to mark past tense ("I was going to the market", "I was reading yeserday").

Source: wiktionary