could heed
Regular verb: heed - heeded- heeded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could heed
you could heed
he could heed
we could heed
you could heed
they could heed 	I could be heeding
you could be heeding
he could be heeding
we could be heeding
you could be heeding
they could be heeding	I could have heeded
you could have heeded
he could have heeded
we could have heeded
you could have heeded
they could have heeded	I could have been heeding
you could have been heeding
he could have been heeding
we could have been heeding
you could have been heeding
they could have been heeding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't heed
you couldn't heed
he couldn't heed
we couldn't heed
you couldn't heed
they couldn't heed 	I couldn't be heeding
you couldn't be heeding
he couldn't be heeding
we couldn't be heeding
you couldn't be heeding
they couldn't be heeding	I couldn't have heeded
you couldn't have heeded
he couldn't have heeded
we couldn't have heeded
you couldn't have heeded
they couldn't have heeded	I couldn't have been heeding
you couldn't have been heeding
he couldn't have been heeding
we couldn't have been heeding
you couldn't have been heeding
they couldn't have been heeding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I heed?
could you heed?
could he heed?
could we heed?
could you heed?
could they heed? 	could I be heeding?
could you be heeding?
could he be heeding?
could we be heeding?
could you be heeding?
could they be heeding? 	could I have heeded?
could you have heeded?
could he have heeded?
could we have heeded?
could you have heeded?
could they have heeded? 	could I have been heeding?
could you have been heeding?
could he have been heeding?
could we have been heeding?
could you have been heeding?
could they have been heeding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I heed?
couldn't you heed?
couldn't he heed?
couldn't we heed?
couldn't you heed?
couldn't they heed? 	couldn't I be heeding?
couldn't you be heeding?
couldn't he be heeding?
couldn't we be heeding?
couldn't you be heeding?
couldn't they be heeding? 	couldn't I have heeded?
couldn't you have heeded?
couldn't he have heeded?
couldn't we have heeded?
couldn't you have heeded?
couldn't they have heeded? 	couldn't I have been heeding?
couldn't you have been heeding?
couldn't he have been heeding?
couldn't we have been heeding?
couldn't you have been heeding?
couldn't they have been heeding?