could heap
Regular verb: heap - heaped- heaped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	
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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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?