English verb conjugation
COULD PERFUME

Regular verb: perfume - perfumed - perfumed

Affirmation

Simple form	V-ing form
I could perfume you could perfume he could perfume we could perfume you could perfume they could perfume	I could be perfuming you could be perfuming he could be perfuming we could be perfuming you could be perfuming they could be perfuming
Perfect	V-ing perfect
I could have perfumed you could have perfumed he could have perfumed we could have perfumed you could have perfumed they could have perfumed	I could have been perfuming you could have been perfuming he could have been perfuming we could have been perfuming you could have been perfuming they could have been perfuming

Negation

Simple form	V-ing form
I could not perfume you could not perfume he could not perfume we could not perfume you could not perfume they could not perfume	I could not be perfuming you could not be perfuming he could not be perfuming we could not be perfuming you could not be perfuming they could not be perfuming
Perfect	V-ing perfect
I could not have perfumed you could not have perfumed he could not have perfumed we could not have perfumed you could not have perfumed they could not have perfumed	I could not have been perfuming you could not have been perfuming he could not have been perfuming we could not have been perfuming you could not have been perfuming they could not have been perfuming

Interrogative form

Simple form	V-ing form
could I perfume? could you perfume? could he perfume? could we perfume? could you perfume? could they perfume?	could I be perfuming? could you be perfuming? could he be perfuming? could we be perfuming? could you be perfuming? could they be perfuming?
Perfect	V-ing perfect
could I have perfumed? could you have perfumed? could he have perfumed? could we have perfumed? could you have perfumed? could they have perfumed?	could I have been perfuming? could you have been perfuming? could he have been perfuming? could we have been perfuming? could you have been perfuming? could they have been perfuming?

Interro-negative form

Simple form	V-ing form
could I not perfume? could you not perfume? could he not perfume? could we not perfume? could you not perfume? could they not perfume?	could I not be perfuming? could you not be perfuming? could he not be perfuming? could we not be perfuming? could you not be perfuming? could they not be perfuming?
Perfect	V-ing perfect
could I not have perfumed? could you not have perfumed? could he not have perfumed? could we not have perfumed? could you not have perfumed? could they not have perfumed?	could I not have been perfuming? could you not have been perfuming? could he not have been perfuming? could we not have been perfuming? could you not have been perfuming? could they not have been perfuming?