irana
Bingham
irána
vt. how to do a thing? to do how? (interrogative).
Sabatier
irana
vt. interr. form. how to do? how to treat?
ex.
- ko iraniko? how did you do it?
- e iranna? how did he proceed to do it? (or go about it).
- e iranaki? how is it done? how should it be done?