English verb conjugation
COULD POWDER

Regular verb: powder - powdered - powdered

Affirmation

Simple form	V-ing form
I could powder you could powder she could powder we could powder you could powder they could powder	I could be powdering you could be powdering she could be powdering we could be powdering you could be powdering they could be powdering
Perfect	V-ing perfect
I could have powdered you could have powdered she could have powdered we could have powdered you could have powdered they could have powdered	I could have been powdering you could have been powdering she could have been powdering we could have been powdering you could have been powdering they could have been powdering

Negation

Simple form	V-ing form
I could not powder you could not powder she could not powder we could not powder you could not powder they could not powder	I could not be powdering you could not be powdering she could not be powdering we could not be powdering you could not be powdering they could not be powdering
Perfect	V-ing perfect
I could not have powdered you could not have powdered she could not have powdered we could not have powdered you could not have powdered they could not have powdered	I could not have been powdering you could not have been powdering she could not have been powdering we could not have been powdering you could not have been powdering they could not have been powdering

Interrogative form

Simple form	V-ing form
could I powder? could you powder? could she powder? could we powder? could you powder? could they powder?	could I be powdering? could you be powdering? could she be powdering? could we be powdering? could you be powdering? could they be powdering?
Perfect	V-ing perfect
could I have powdered? could you have powdered? could she have powdered? could we have powdered? could you have powdered? could they have powdered?	could I have been powdering? could you have been powdering? could she have been powdering? could we have been powdering? could you have been powdering? could they have been powdering?

Interro-negative form

Simple form	V-ing form
could I not powder? could you not powder? could she not powder? could we not powder? could you not powder? could they not powder?	could I not be powdering? could you not be powdering? could she not be powdering? could we not be powdering? could you not be powdering? could they not be powdering?
Perfect	V-ing perfect
could I not have powdered? could you not have powdered? could she not have powdered? could we not have powdered? could you not have powdered? could they not have powdered?	could I not have been powdering? could you not have been powdering? could she not have been powdering? could we not have been powdering? could you not have been powdering? could they not have been powdering?