English verb conjugation
COULD PLUME

Regular verb: plume - plumed - plumed

Affirmation

Simple form	V-ing form
I could plume you could plume he could plume we could plume you could plume they could plume	I could be pluming you could be pluming he could be pluming we could be pluming you could be pluming they could be pluming
Perfect	V-ing perfect
I could have plumed you could have plumed he could have plumed we could have plumed you could have plumed they could have plumed	I could have been pluming you could have been pluming he could have been pluming we could have been pluming you could have been pluming they could have been pluming

Negation

Simple form	V-ing form
I could not plume you could not plume he could not plume we could not plume you could not plume they could not plume	I could not be pluming you could not be pluming he could not be pluming we could not be pluming you could not be pluming they could not be pluming
Perfect	V-ing perfect
I could not have plumed you could not have plumed he could not have plumed we could not have plumed you could not have plumed they could not have plumed	I could not have been pluming you could not have been pluming he could not have been pluming we could not have been pluming you could not have been pluming they could not have been pluming

Interrogative form

Simple form	V-ing form
could I plume? could you plume? could he plume? could we plume? could you plume? could they plume?	could I be pluming? could you be pluming? could he be pluming? could we be pluming? could you be pluming? could they be pluming?
Perfect	V-ing perfect
could I have plumed? could you have plumed? could he have plumed? could we have plumed? could you have plumed? could they have plumed?	could I have been pluming? could you have been pluming? could he have been pluming? could we have been pluming? could you have been pluming? could they have been pluming?

Interro-negative form

Simple form	V-ing form
could I not plume? could you not plume? could he not plume? could we not plume? could you not plume? could they not plume?	could I not be pluming? could you not be pluming? could he not be pluming? could we not be pluming? could you not be pluming? could they not be pluming?
Perfect	V-ing perfect
could I not have plumed? could you not have plumed? could he not have plumed? could we not have plumed? could you not have plumed? could they not have plumed?	could I not have been pluming? could you not have been pluming? could he not have been pluming? could we not have been pluming? could you not have been pluming? could they not have been pluming?