could heel
Regular verb: heel - heeled- heeled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could heel
you could heel
he could heel
we could heel
you could heel
they could heel 	I could be heeling
you could be heeling
he could be heeling
we could be heeling
you could be heeling
they could be heeling	I could have heeled
you could have heeled
he could have heeled
we could have heeled
you could have heeled
they could have heeled	I could have been heeling
you could have been heeling
he could have been heeling
we could have been heeling
you could have been heeling
they could have been heeling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't heel
you couldn't heel
he couldn't heel
we couldn't heel
you couldn't heel
they couldn't heel 	I couldn't be heeling
you couldn't be heeling
he couldn't be heeling
we couldn't be heeling
you couldn't be heeling
they couldn't be heeling	I couldn't have heeled
you couldn't have heeled
he couldn't have heeled
we couldn't have heeled
you couldn't have heeled
they couldn't have heeled	I couldn't have been heeling
you couldn't have been heeling
he couldn't have been heeling
we couldn't have been heeling
you couldn't have been heeling
they couldn't have been heeling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I heel?
could you heel?
could he heel?
could we heel?
could you heel?
could they heel? 	could I be heeling?
could you be heeling?
could he be heeling?
could we be heeling?
could you be heeling?
could they be heeling? 	could I have heeled?
could you have heeled?
could he have heeled?
could we have heeled?
could you have heeled?
could they have heeled? 	could I have been heeling?
could you have been heeling?
could he have been heeling?
could we have been heeling?
could you have been heeling?
could they have been heeling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I heel?
couldn't you heel?
couldn't he heel?
couldn't we heel?
couldn't you heel?
couldn't they heel? 	couldn't I be heeling?
couldn't you be heeling?
couldn't he be heeling?
couldn't we be heeling?
couldn't you be heeling?
couldn't they be heeling? 	couldn't I have heeled?
couldn't you have heeled?
couldn't he have heeled?
couldn't we have heeled?
couldn't you have heeled?
couldn't they have heeled? 	couldn't I have been heeling?
couldn't you have been heeling?
couldn't he have been heeling?
couldn't we have been heeling?
couldn't you have been heeling?
couldn't they have been heeling?