could underwork
Verbe régulier : underwork - underworked- underworked

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could underwork
you could underwork
he could underwork
we could underwork
you could underwork
they could underwork 	I could be underworking
you could be underworking
he could be underworking
we could be underworking
you could be underworking
they could be underworking	I could have underworked
you could have underworked
he could have underworked
we could have underworked
you could have underworked
they could have underworked	I could have been underworking
you could have been underworking
he could have been underworking
we could have been underworking
you could have been underworking
they could have been underworking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not underwork
you could not underwork
he could not underwork
we could not underwork
you could not underwork
they could not underwork 	I could not be underworking
you could not be underworking
he could not be underworking
we could not be underworking
you could not be underworking
they could not be underworking	I could not have underworked
you could not have underworked
he could not have underworked
we could not have underworked
you could not have underworked
they could not have underworked	I could not have been underworking
you could not have been underworking
he could not have been underworking
we could not have been underworking
you could not have been underworking
they could not have been underworking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I underwork?
could you underwork?
could he underwork?
could we underwork?
could you underwork?
could they underwork? 	could I be underworking?
could you be underworking?
could he be underworking?
could we be underworking?
could you be underworking?
could they be underworking? 	could I have underworked?
could you have underworked?
could he have underworked?
could we have underworked?
could you have underworked?
could they have underworked? 	could I have been underworking?
could you have been underworking?
could he have been underworking?
could we have been underworking?
could you have been underworking?
could they have been underworking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not underwork?
could you not underwork?
could he not underwork?
could we not underwork?
could you not underwork?
could they not underwork? 	could I not be underworking?
could you not be underworking?
could he not be underworking?
could we not be underworking?
could you not be underworking?
could they not be underworking? 	could I not have underworked?
could you not have underworked?
could he not have underworked?
could we not have underworked?
could you not have underworked?
could they not have underworked? 	could I not have been underworking?
could you not have been underworking?
could he not have been underworking?
could we not have been underworking?
could you not have been underworking?
could they not have been underworking?