As we have seen, transitive verbs and predicate nouns can be distinguished by adding words. However, predicate adjectives cannot be clearly identified. But can an intransitive verb be uniquely identified as such?
Let's look at the following example:
ona li kon. - kon as transitive verb: It is blowing.
ona li kon. - kon as intransitive verb: It is breathing.
ona li kon. - kon as noun: It is air.
ona li kon. - kon as adjective: It is air-like.
If we only want to allow the intransitive verb "kon" here, we can't add an "e" as it is done with transitive verbs. That sentence wouldn't mean "It is breathing."
How can one extend this sentence that "kon" can only be an intransitive verb?
BTW: You can use the Toki Pona Parser to find grammatical variants of a sentence.https://jan-lope.github.io/Toki_Pona-Parser/