quien

1

das (o)

pron. relativo - compl. directo - sing., who (relative pronoun)
2

dem (pronoun)

relative pronoun
3

den (o)

pron. relativo - compl. directo - sing., relative pronoun
4

der (determiner pronoun n)

(''relative'') who, whom, what, relative pronoun, who (relative pronoun)
5

die (o)

pron. relativo - compl. directo - sing., relative pronoun, who (relative pronoun)
6

welcher (determiner pronoun n)

(''relative'') who, whom, what
7

deren (pronoun)

of whom (relative)
8

dessen (pronoun)

of whom (relative)
9

wessen (pronoun)

of whom (interrogative)