English verb conjugation
COULD SPUME

Regular verb: spume - spumed - spumed

Affirmation

Simple form	V-ing form
I could spume you could spume he could spume we could spume you could spume they could spume	I could be spuming you could be spuming he could be spuming we could be spuming you could be spuming they could be spuming
Perfect	V-ing perfect
I could have spumed you could have spumed he could have spumed we could have spumed you could have spumed they could have spumed	I could have been spuming you could have been spuming he could have been spuming we could have been spuming you could have been spuming they could have been spuming

Negation

Simple form	V-ing form
I could not spume you could not spume he could not spume we could not spume you could not spume they could not spume	I could not be spuming you could not be spuming he could not be spuming we could not be spuming you could not be spuming they could not be spuming
Perfect	V-ing perfect
I could not have spumed you could not have spumed he could not have spumed we could not have spumed you could not have spumed they could not have spumed	I could not have been spuming you could not have been spuming he could not have been spuming we could not have been spuming you could not have been spuming they could not have been spuming

Interrogative form

Simple form	V-ing form
could I spume? could you spume? could he spume? could we spume? could you spume? could they spume?	could I be spuming? could you be spuming? could he be spuming? could we be spuming? could you be spuming? could they be spuming?
Perfect	V-ing perfect
could I have spumed? could you have spumed? could he have spumed? could we have spumed? could you have spumed? could they have spumed?	could I have been spuming? could you have been spuming? could he have been spuming? could we have been spuming? could you have been spuming? could they have been spuming?

Interro-negative form

Simple form	V-ing form
could I not spume? could you not spume? could he not spume? could we not spume? could you not spume? could they not spume?	could I not be spuming? could you not be spuming? could he not be spuming? could we not be spuming? could you not be spuming? could they not be spuming?
Perfect	V-ing perfect
could I not have spumed? could you not have spumed? could he not have spumed? could we not have spumed? could you not have spumed? could they not have spumed?	could I not have been spuming? could you not have been spuming? could he not have been spuming? could we not have been spuming? could you not have been spuming? could they not have been spuming?