Been thinking about verbs today.
Do preach and teach come from different language roots? (One Germanic, one Roman?) If so, that would explain why one is a strong verb and one is a weak verb. If not, then were they both strong verbs at one point? Is there an archaic praught to go alongside taught?
We don't rive things these days, but we still write about trees riven by lighting when we're getting poetic.
Similarly, I can't find any definition of wrought except as a past tense of work. But obviously the word is related to wright as in shipwright.
Dived drives me nuts. I grew up with dove. However, the dictionary informs me that dive was originally a weak verb. How weird.
I really do randomly think about these things while driving home from work. I wish English were taught more like a foreign language in schools, because then students would learn more of why things are the way they are, instead of just memorizing what they are.