-laH

[pe-tlhoS]

Why is the verb suffix '-laH' (can; able to) considered type 5, not type 2?

[jdmcowan]

I agree that the -laH verb suffix feels like it would more naturally fit in with the type 2 suffixes, but it's not and that's just the way it is. If you ever meet a Klingon linguist, perhaps he will have studied it and will be able to answer in a more meaningful way. Dr. Okrand might also have some insight if you ever get a chance to meet and talk with him.