could emend
Regular verb: emend - emended- emended

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could emend
you could emend
he could emend
we could emend
you could emend
they could emend 	I could be emending
you could be emending
he could be emending
we could be emending
you could be emending
they could be emending	I could have emended
you could have emended
he could have emended
we could have emended
you could have emended
they could have emended	I could have been emending
you could have been emending
he could have been emending
we could have been emending
you could have been emending
they could have been emending	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't emend
you couldn't emend
he couldn't emend
we couldn't emend
you couldn't emend
they couldn't emend 	I couldn't be emending
you couldn't be emending
he couldn't be emending
we couldn't be emending
you couldn't be emending
they couldn't be emending	I couldn't have emended
you couldn't have emended
he couldn't have emended
we couldn't have emended
you couldn't have emended
they couldn't have emended	I couldn't have been emending
you couldn't have been emending
he couldn't have been emending
we couldn't have been emending
you couldn't have been emending
they couldn't have been emending	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I emend?
could you emend?
could he emend?
could we emend?
could you emend?
could they emend? 	could I be emending?
could you be emending?
could he be emending?
could we be emending?
could you be emending?
could they be emending? 	could I have emended?
could you have emended?
could he have emended?
could we have emended?
could you have emended?
could they have emended? 	could I have been emending?
could you have been emending?
could he have been emending?
could we have been emending?
could you have been emending?
could they have been emending? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I emend?
couldn't you emend?
couldn't he emend?
couldn't we emend?
couldn't you emend?
couldn't they emend? 	couldn't I be emending?
couldn't you be emending?
couldn't he be emending?
couldn't we be emending?
couldn't you be emending?
couldn't they be emending? 	couldn't I have emended?
couldn't you have emended?
couldn't he have emended?
couldn't we have emended?
couldn't you have emended?
couldn't they have emended? 	couldn't I have been emending?
couldn't you have been emending?
couldn't he have been emending?
couldn't we have been emending?
couldn't you have been emending?
couldn't they have been emending?