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 couldn't spume you couldn't spume he couldn't spume we couldn't spume you couldn't spume they couldn't spume	I couldn't be spuming you couldn't be spuming he couldn't be spuming we couldn't be spuming you couldn't be spuming they couldn't be spuming
Perfect	V-ing perfect
I couldn't have spumed you couldn't have spumed he couldn't have spumed we couldn't have spumed you couldn't have spumed they couldn't have spumed	I couldn't have been spuming you couldn't have been spuming he couldn't have been spuming we couldn't have been spuming you couldn't have been spuming they couldn't 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
couldn't I spume? couldn't you spume? couldn't he spume? couldn't we spume? couldn't you spume? couldn't they spume?	couldn't I be spuming? couldn't you be spuming? couldn't he be spuming? couldn't we be spuming? couldn't you be spuming? couldn't they be spuming?
Perfect	V-ing perfect
couldn't I have spumed? couldn't you have spumed? couldn't he have spumed? couldn't we have spumed? couldn't you have spumed? couldn't they have spumed?	couldn't I have been spuming? couldn't you have been spuming? couldn't he have been spuming? couldn't we have been spuming? couldn't you have been spuming? couldn't they have been spuming?