He occasionally visited me. ✬

They visited me occasionally. ✬

Tom occasionally visited Mary at her parents' house. ✬

Tom doesn't mind helping Mary occasionally. ✬

Even now, I occasionally think I'd like to see you. Not the you that you are today, but the you I remember from the past. ✬

Tom stopped by occasionally to fix things for Mary. ✬

It happens occasionally. ✬

I run into Tom occasionally. ✬

Occasionally, things don't go as planned. ✬

That does happen occasionally. ✬