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