[NTG-context] Itemize in two columns

I want to use the itemize command to produce the following list, but I don't know if this is possible at all. *a)* bla bla * b) *bla bla *c)* bla bla *d)* bla bla *e)* bla bla instead of a) bla bla d) bla bla b) bla bla e) bla bla c) bla bla Kind regards Wim