vem

1

wem (o)

interrogativt pron. - indirekt obj. - sg., what person or people, object of a preposition (dative), what person; object of a verb (accusative)
2

wen (o)

interrogativt pron. - direkt. obj. - sg., what person or people, object of a preposition (dative), what person; object of a verb (accusative)
3

wer (o)

interrogativt pron. - pl., interrogativt pron. - sg., who? (interrogative pronoun)