kommen

to get hold of sth., to obtain sth.

what you get hold of — an object or information you obtain

Wie bist du an diese Informationen gekommen?

How did you get hold of this information?

woran?daran

to think of sth., to come up with sth.

what you think of — an idea or memory that occurs to you

Ich komme nicht auf seinen Namen.

I can't think of his name.

worauf?darauf

to come from sth. / somewhere (origin)

where you are from — origin, not something you finally got around to

Sie kommt aus einer kleinen Stadt.

She comes from a small town.

woraus?daraus

to come to sb. with sth. (colloquial, often exasperated)

what you bring up — an annoying argument or object

Komm mir nicht mit solchen Ausreden!

Don't come to me with such excuses!

womit?damit

to lose sth. (incl. one's life)

what you lose — a loss, not something you think of

Bei dem Unfall kam er ums Leben.

He lost his life in the accident.

worum?darum

to stem from sth., to be caused by sth.

what causes it — a cause, not a geographic origin (cf. aus)

Das kommt vom vielen Sitzen.

That comes from sitting too much.

wovon?davon

to get around to sth.

what you finally got around to — time you found, not where you are from

Ich komme nicht zum Schreiben.

I just can't get around to writing.

wozu?dazu