could sulfurize
Verbe régulier : sulfurize - sulfurized- sulfurized

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could sulfurize
you could sulfurize
he could sulfurize
we could sulfurize
you could sulfurize
they could sulfurize 	I could be sulfurizing
you could be sulfurizing
he could be sulfurizing
we could be sulfurizing
you could be sulfurizing
they could be sulfurizing	I could have sulfurized
you could have sulfurized
he could have sulfurized
we could have sulfurized
you could have sulfurized
they could have sulfurized	I could have been sulfurizing
you could have been sulfurizing
he could have been sulfurizing
we could have been sulfurizing
you could have been sulfurizing
they could have been sulfurizing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not sulfurize
you could not sulfurize
he could not sulfurize
we could not sulfurize
you could not sulfurize
they could not sulfurize 	I could not be sulfurizing
you could not be sulfurizing
he could not be sulfurizing
we could not be sulfurizing
you could not be sulfurizing
they could not be sulfurizing	I could not have sulfurized
you could not have sulfurized
he could not have sulfurized
we could not have sulfurized
you could not have sulfurized
they could not have sulfurized	I could not have been sulfurizing
you could not have been sulfurizing
he could not have been sulfurizing
we could not have been sulfurizing
you could not have been sulfurizing
they could not have been sulfurizing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I sulfurize?
could you sulfurize?
could he sulfurize?
could we sulfurize?
could you sulfurize?
could they sulfurize? 	could I be sulfurizing?
could you be sulfurizing?
could he be sulfurizing?
could we be sulfurizing?
could you be sulfurizing?
could they be sulfurizing? 	could I have sulfurized?
could you have sulfurized?
could he have sulfurized?
could we have sulfurized?
could you have sulfurized?
could they have sulfurized? 	could I have been sulfurizing?
could you have been sulfurizing?
could he have been sulfurizing?
could we have been sulfurizing?
could you have been sulfurizing?
could they have been sulfurizing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not sulfurize?
could you not sulfurize?
could he not sulfurize?
could we not sulfurize?
could you not sulfurize?
could they not sulfurize? 	could I not be sulfurizing?
could you not be sulfurizing?
could he not be sulfurizing?
could we not be sulfurizing?
could you not be sulfurizing?
could they not be sulfurizing? 	could I not have sulfurized?
could you not have sulfurized?
could he not have sulfurized?
could we not have sulfurized?
could you not have sulfurized?
could they not have sulfurized? 	could I not have been sulfurizing?
could you not have been sulfurizing?
could he not have been sulfurizing?
could we not have been sulfurizing?
could you not have been sulfurizing?
could they not have been sulfurizing?