English verb conjugation
COULD HEAP

Regular verb: heap - heaped - heaped

Affirmation

Simple form	V-ing form
I could heap you could heap he could heap we could heap you could heap they could heap	I could be heaping you could be heaping he could be heaping we could be heaping you could be heaping they could be heaping
Perfect	V-ing perfect
I could have heaped you could have heaped he could have heaped we could have heaped you could have heaped they could have heaped	I could have been heaping you could have been heaping he could have been heaping we could have been heaping you could have been heaping they could have been heaping

Negation

Simple form	V-ing form
I couldn't heap you couldn't heap he couldn't heap we couldn't heap you couldn't heap they couldn't heap	I couldn't be heaping you couldn't be heaping he couldn't be heaping we couldn't be heaping you couldn't be heaping they couldn't be heaping
Perfect	V-ing perfect
I couldn't have heaped you couldn't have heaped he couldn't have heaped we couldn't have heaped you couldn't have heaped they couldn't have heaped	I couldn't have been heaping you couldn't have been heaping he couldn't have been heaping we couldn't have been heaping you couldn't have been heaping they couldn't have been heaping

Interrogative form

Simple form	V-ing form
could I heap? could you heap? could he heap? could we heap? could you heap? could they heap?	could I be heaping? could you be heaping? could he be heaping? could we be heaping? could you be heaping? could they be heaping?
Perfect	V-ing perfect
could I have heaped? could you have heaped? could he have heaped? could we have heaped? could you have heaped? could they have heaped?	could I have been heaping? could you have been heaping? could he have been heaping? could we have been heaping? could you have been heaping? could they have been heaping?

Interro-negative form

Simple form	V-ing form
couldn't I heap? couldn't you heap? couldn't he heap? couldn't we heap? couldn't you heap? couldn't they heap?	couldn't I be heaping? couldn't you be heaping? couldn't he be heaping? couldn't we be heaping? couldn't you be heaping? couldn't they be heaping?
Perfect	V-ing perfect
couldn't I have heaped? couldn't you have heaped? couldn't he have heaped? couldn't we have heaped? couldn't you have heaped? couldn't they have heaped?	couldn't I have been heaping? couldn't you have been heaping? couldn't he have been heaping? couldn't we have been heaping? couldn't you have been heaping? couldn't they have been heaping?