You also could talk with only one word (unary system), but this misses the mark completely. I experimented to design a variant of Toki Pona with only two-sylla

You also could talk with only one word (unary system), but this misses the mark completely. I experimented to design a variant of Toki Pona with only two-syllable words, but then I realized that's why it's a linguist who designed Toki Pona. One of the points: the phonemes in a language are not evenly distributed, and even the combinations thereof are not. For example, /ne/ might be twice as frequent than /pa/. I as a programmer started with something like an uniform distribution, and immediately realized that it felt awkward. It's like the secret sauce: choose the right 120 words and their pronunciation wisely!