could heave
Irregular verb: heave - heaved, hove- heaved, hove

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could heave
you could heave
she could heave
we could heave
you could heave
they could heave 	I could be heaving
you could be heaving
she could be heaving
we could be heaving
you could be heaving
they could be heaving	I could have heaved, hove
you could have heaved, hove
she could have heaved, hove
we could have heaved, hove
you could have heaved, hove
they could have heaved, hove	I could have been heaving
you could have been heaving
she could have been heaving
we could have been heaving
you could have been heaving
they could have been heaving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't heave
you couldn't heave
she couldn't heave
we couldn't heave
you couldn't heave
they couldn't heave 	I couldn't be heaving
you couldn't be heaving
she couldn't be heaving
we couldn't be heaving
you couldn't be heaving
they couldn't be heaving	I couldn't have heaved, hove
you couldn't have heaved, hove
she couldn't have heaved, hove
we couldn't have heaved, hove
you couldn't have heaved, hove
they couldn't have heaved, hove	I couldn't have been heaving
you couldn't have been heaving
she couldn't have been heaving
we couldn't have been heaving
you couldn't have been heaving
they couldn't have been heaving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I heave?
could you heave?
could she heave?
could we heave?
could you heave?
could they heave? 	could I be heaving?
could you be heaving?
could she be heaving?
could we be heaving?
could you be heaving?
could they be heaving? 	could I have heaved, hove?
could you have heaved, hove?
could she have heaved, hove?
could we have heaved, hove?
could you have heaved, hove?
could they have heaved, hove? 	could I have been heaving?
could you have been heaving?
could she have been heaving?
could we have been heaving?
could you have been heaving?
could they have been heaving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I heave?
couldn't you heave?
couldn't she heave?
couldn't we heave?
couldn't you heave?
couldn't they heave? 	couldn't I be heaving?
couldn't you be heaving?
couldn't she be heaving?
couldn't we be heaving?
couldn't you be heaving?
couldn't they be heaving? 	couldn't I have heaved, hove?
couldn't you have heaved, hove?
couldn't she have heaved, hove?
couldn't we have heaved, hove?
couldn't you have heaved, hove?
couldn't they have heaved, hove? 	couldn't I have been heaving?
couldn't you have been heaving?
couldn't she have been heaving?
couldn't we have been heaving?
couldn't you have been heaving?
couldn't they have been heaving?