en > eu 
/huːm/
1 pron. (in direct, indirect questions) nor
whom did he see?: nor ikusi zuen?
to whom did he talk?: norekin hitz egin du?
2 pron. (in relative clauses) -en(a); zein(a) bait-/-(e)n
the man whom I saw: ikusi nuen gizona
those whom I love: maite ditudanak
my neighbour, with whom I went to the cinema, is very kind: nire bizilaguna, zeinarekin zinemara joan bainintzen, oso jatorra da
several people came, none of whom I knew: etorri zirenetatik inor ez nuen ezagutzen