Osallistua ^{(Verb type1)}

1. (intransitive + illative or (rare) allative) To participate in, take part in, partake in, be involved/included in.
2. (intransitive) To attend (e.g. a lecture, a course = allative).
3. (intransitive) To share (the costs = illative).

The present, imperfect, perfect, and pluperfect (past perfect) tenses in English correspond to "speaks", "spoke", "has spoken", and "had spoken".

The conditional present and perfect moods in English typically correspond to "would" and "would have".