English verb conjugation
COULD SPAM

Regular verb: spam - spamed - spamed

Affirmation

Simple form	V-ing form
I could spam you could spam he could spam we could spam you could spam they could spam	I could be spaming you could be spaming he could be spaming we could be spaming you could be spaming they could be spaming
Perfect	V-ing perfect
I could have spamed you could have spamed he could have spamed we could have spamed you could have spamed they could have spamed	I could have been spaming you could have been spaming he could have been spaming we could have been spaming you could have been spaming they could have been spaming

Negation

Simple form	V-ing form
I couldn't spam you couldn't spam he couldn't spam we couldn't spam you couldn't spam they couldn't spam	I couldn't be spaming you couldn't be spaming he couldn't be spaming we couldn't be spaming you couldn't be spaming they couldn't be spaming
Perfect	V-ing perfect
I couldn't have spamed you couldn't have spamed he couldn't have spamed we couldn't have spamed you couldn't have spamed they couldn't have spamed	I couldn't have been spaming you couldn't have been spaming he couldn't have been spaming we couldn't have been spaming you couldn't have been spaming they couldn't have been spaming

Interrogative form

Simple form	V-ing form
could I spam? could you spam? could he spam? could we spam? could you spam? could they spam?	could I be spaming? could you be spaming? could he be spaming? could we be spaming? could you be spaming? could they be spaming?
Perfect	V-ing perfect
could I have spamed? could you have spamed? could he have spamed? could we have spamed? could you have spamed? could they have spamed?	could I have been spaming? could you have been spaming? could he have been spaming? could we have been spaming? could you have been spaming? could they have been spaming?

Interro-negative form

Simple form	V-ing form
couldn't I spam? couldn't you spam? couldn't he spam? couldn't we spam? couldn't you spam? couldn't they spam?	couldn't I be spaming? couldn't you be spaming? couldn't he be spaming? couldn't we be spaming? couldn't you be spaming? couldn't they be spaming?
Perfect	V-ing perfect
couldn't I have spamed? couldn't you have spamed? couldn't he have spamed? couldn't we have spamed? couldn't you have spamed? couldn't they have spamed?	couldn't I have been spaming? couldn't you have been spaming? couldn't he have been spaming? couldn't we have been spaming? couldn't you have been spaming? couldn't they have been spaming?