During the early process of learning Japanese, I had moments of confusion when there was a difference between what I learned and what seemed to be the correct way of using a verb.
For instance "to continue": I learned suzukimasu, but it turned out to be suzukemasu.
Same for "to begin": I learned hajimemasu, while it was hajimarimasu.
Very confusing, untill I read a blog entry on Transitive and Intransitive verbs.
Than I realised that both conjugations are correct, they just mean something different.
I continue something:
suzukemasu
Something continues:
suzukimasu
I start something: hajimemasu
Something starts: hajimarimasu
Actually I left it to that, and didn't really study the pair of such verbs until I got the feeling that I could not improve my conversation skills anymore. But I did collect them, and as I am getting ready to include them in my Anki decks, I might as well share them.
The more I study, the more I come across such pairs of verbs. So I guess I will keep on updating the list in the future.
If I start with the more common or frequently used verbs, it's already a good basis.
You can get my list here.