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 could not emend
you could not emend
he could not emend
we could not emend
you could not emend
they could not emend 	I could not be emending
you could not be emending
he could not be emending
we could not be emending
you could not be emending
they could not be emending	I could not have emended
you could not have emended
he could not have emended
we could not have emended
you could not have emended
they could not have emended	I could not have been emending
you could not have been emending
he could not have been emending
we could not have been emending
you could not have been emending
they could not 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 	
could I not emend?
could you not emend?
could he not emend?
could we not emend?
could you not emend?
could they not emend? 	could I not be emending?
could you not be emending?
could he not be emending?
could we not be emending?
could you not be emending?
could they not be emending? 	could I not have emended?
could you not have emended?
could he not have emended?
could we not have emended?
could you not have emended?
could they not have emended? 	could I not have been emending?
could you not have been emending?
could he not have been emending?
could we not have been emending?
could you not have been emending?
could they not have been emending?