could retrospect
Verbe régulier : retrospect - retrospected- retrospected

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could retrospect
you could retrospect
he could retrospect
we could retrospect
you could retrospect
they could retrospect 	I could be retrospecting
you could be retrospecting
he could be retrospecting
we could be retrospecting
you could be retrospecting
they could be retrospecting	I could have retrospected
you could have retrospected
he could have retrospected
we could have retrospected
you could have retrospected
they could have retrospected	I could have been retrospecting
you could have been retrospecting
he could have been retrospecting
we could have been retrospecting
you could have been retrospecting
they could have been retrospecting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't retrospect
you couldn't retrospect
he couldn't retrospect
we couldn't retrospect
you couldn't retrospect
they couldn't retrospect 	I couldn't be retrospecting
you couldn't be retrospecting
he couldn't be retrospecting
we couldn't be retrospecting
you couldn't be retrospecting
they couldn't be retrospecting	I couldn't have retrospected
you couldn't have retrospected
he couldn't have retrospected
we couldn't have retrospected
you couldn't have retrospected
they couldn't have retrospected	I couldn't have been retrospecting
you couldn't have been retrospecting
he couldn't have been retrospecting
we couldn't have been retrospecting
you couldn't have been retrospecting
they couldn't have been retrospecting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I retrospect?
could you retrospect?
could he retrospect?
could we retrospect?
could you retrospect?
could they retrospect? 	could I be retrospecting?
could you be retrospecting?
could he be retrospecting?
could we be retrospecting?
could you be retrospecting?
could they be retrospecting? 	could I have retrospected?
could you have retrospected?
could he have retrospected?
could we have retrospected?
could you have retrospected?
could they have retrospected? 	could I have been retrospecting?
could you have been retrospecting?
could he have been retrospecting?
could we have been retrospecting?
could you have been retrospecting?
could they have been retrospecting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I retrospect?
couldn't you retrospect?
couldn't he retrospect?
couldn't we retrospect?
couldn't you retrospect?
couldn't they retrospect? 	couldn't I be retrospecting?
couldn't you be retrospecting?
couldn't he be retrospecting?
couldn't we be retrospecting?
couldn't you be retrospecting?
couldn't they be retrospecting? 	couldn't I have retrospected?
couldn't you have retrospected?
couldn't he have retrospected?
couldn't we have retrospected?
couldn't you have retrospected?
couldn't they have retrospected? 	couldn't I have been retrospecting?
couldn't you have been retrospecting?
couldn't he have been retrospecting?
couldn't we have been retrospecting?
couldn't you have been retrospecting?
couldn't they have been retrospecting?