could obstruct
Verbe régulier : obstruct - obstructed- obstructed
Traduction française : bloquer - faire obstruction ou obstacle à 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could obstruct
you could obstruct
he could obstruct
we could obstruct
you could obstruct
they could obstruct 	I could be obstructing
you could be obstructing
he could be obstructing
we could be obstructing
you could be obstructing
they could be obstructing	I could have obstructed
you could have obstructed
he could have obstructed
we could have obstructed
you could have obstructed
they could have obstructed	I could have been obstructing
you could have been obstructing
he could have been obstructing
we could have been obstructing
you could have been obstructing
they could have been obstructing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not obstruct
you could not obstruct
he could not obstruct
we could not obstruct
you could not obstruct
they could not obstruct 	I could not be obstructing
you could not be obstructing
he could not be obstructing
we could not be obstructing
you could not be obstructing
they could not be obstructing	I could not have obstructed
you could not have obstructed
he could not have obstructed
we could not have obstructed
you could not have obstructed
they could not have obstructed	I could not have been obstructing
you could not have been obstructing
he could not have been obstructing
we could not have been obstructing
you could not have been obstructing
they could not have been obstructing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I obstruct?
could you obstruct?
could he obstruct?
could we obstruct?
could you obstruct?
could they obstruct? 	could I be obstructing?
could you be obstructing?
could he be obstructing?
could we be obstructing?
could you be obstructing?
could they be obstructing? 	could I have obstructed?
could you have obstructed?
could he have obstructed?
could we have obstructed?
could you have obstructed?
could they have obstructed? 	could I have been obstructing?
could you have been obstructing?
could he have been obstructing?
could we have been obstructing?
could you have been obstructing?
could they have been obstructing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not obstruct?
could you not obstruct?
could he not obstruct?
could we not obstruct?
could you not obstruct?
could they not obstruct? 	could I not be obstructing?
could you not be obstructing?
could he not be obstructing?
could we not be obstructing?
could you not be obstructing?
could they not be obstructing? 	could I not have obstructed?
could you not have obstructed?
could he not have obstructed?
could we not have obstructed?
could you not have obstructed?
could they not have obstructed? 	could I not have been obstructing?
could you not have been obstructing?
could he not have been obstructing?
could we not have been obstructing?
could you not have been obstructing?
could they not have been obstructing?