could underreact
Verbe régulier : underreact - underreacted- underreacted

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could underreact
you could underreact
he could underreact
we could underreact
you could underreact
they could underreact 	I could be underreacting
you could be underreacting
he could be underreacting
we could be underreacting
you could be underreacting
they could be underreacting	I could have underreacted
you could have underreacted
he could have underreacted
we could have underreacted
you could have underreacted
they could have underreacted	I could have been underreacting
you could have been underreacting
he could have been underreacting
we could have been underreacting
you could have been underreacting
they could have been underreacting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not underreact
you could not underreact
he could not underreact
we could not underreact
you could not underreact
they could not underreact 	I could not be underreacting
you could not be underreacting
he could not be underreacting
we could not be underreacting
you could not be underreacting
they could not be underreacting	I could not have underreacted
you could not have underreacted
he could not have underreacted
we could not have underreacted
you could not have underreacted
they could not have underreacted	I could not have been underreacting
you could not have been underreacting
he could not have been underreacting
we could not have been underreacting
you could not have been underreacting
they could not have been underreacting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I underreact?
could you underreact?
could he underreact?
could we underreact?
could you underreact?
could they underreact? 	could I be underreacting?
could you be underreacting?
could he be underreacting?
could we be underreacting?
could you be underreacting?
could they be underreacting? 	could I have underreacted?
could you have underreacted?
could he have underreacted?
could we have underreacted?
could you have underreacted?
could they have underreacted? 	could I have been underreacting?
could you have been underreacting?
could he have been underreacting?
could we have been underreacting?
could you have been underreacting?
could they have been underreacting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not underreact?
could you not underreact?
could he not underreact?
could we not underreact?
could you not underreact?
could they not underreact? 	could I not be underreacting?
could you not be underreacting?
could he not be underreacting?
could we not be underreacting?
could you not be underreacting?
could they not be underreacting? 	could I not have underreacted?
could you not have underreacted?
could he not have underreacted?
could we not have underreacted?
could you not have underreacted?
could they not have underreacted? 	could I not have been underreacting?
could you not have been underreacting?
could he not have been underreacting?
could we not have been underreacting?
could you not have been underreacting?
could they not have been underreacting?