Our volunteers look into many questions every day; sometimes it takes them a little while to answer.
Pro tip: you can rename the thread title with `.tr <thread name>`
Make it descriptive, including relevant context, but also to the point. This way you improve your chances of getting a more relevant and specific answer.
I assume you're meaning dû and not du?
J'aurais dû = I should have
J'avais dû ≈ I had to have [done x]/I had to [do x] (before another event in the past)
dapper meteor
bleak mirage
gentle wing