I determined to create a conlang with tri-consonantal roots (I call them tri-cons for short). My question then arose, "what words would naturally have a tri-con?" Verbs and the nouns derived from them would have tri-cons as exemplified in natural nonconcatenative languages. At the same time, those very languages have words which seem unrelated to tri-cons. In essence, I do not want to create tri-cons where none would evolve for naturalism and efficiency purposes.
Perhaps a more clear question is, "how prevalent are tri-cons in nonconcatenative languages?"