could sulfurise
Verbe régulier : sulfurise - sulfurised- sulfurised

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could sulfurise
you could sulfurise
he could sulfurise
we could sulfurise
you could sulfurise
they could sulfurise 	I could be sulfurising
you could be sulfurising
he could be sulfurising
we could be sulfurising
you could be sulfurising
they could be sulfurising	I could have sulfurised
you could have sulfurised
he could have sulfurised
we could have sulfurised
you could have sulfurised
they could have sulfurised	I could have been sulfurising
you could have been sulfurising
he could have been sulfurising
we could have been sulfurising
you could have been sulfurising
they could have been sulfurising	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't sulfurise
you couldn't sulfurise
he couldn't sulfurise
we couldn't sulfurise
you couldn't sulfurise
they couldn't sulfurise 	I couldn't be sulfurising
you couldn't be sulfurising
he couldn't be sulfurising
we couldn't be sulfurising
you couldn't be sulfurising
they couldn't be sulfurising	I couldn't have sulfurised
you couldn't have sulfurised
he couldn't have sulfurised
we couldn't have sulfurised
you couldn't have sulfurised
they couldn't have sulfurised	I couldn't have been sulfurising
you couldn't have been sulfurising
he couldn't have been sulfurising
we couldn't have been sulfurising
you couldn't have been sulfurising
they couldn't have been sulfurising	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I sulfurise?
could you sulfurise?
could he sulfurise?
could we sulfurise?
could you sulfurise?
could they sulfurise? 	could I be sulfurising?
could you be sulfurising?
could he be sulfurising?
could we be sulfurising?
could you be sulfurising?
could they be sulfurising? 	could I have sulfurised?
could you have sulfurised?
could he have sulfurised?
could we have sulfurised?
could you have sulfurised?
could they have sulfurised? 	could I have been sulfurising?
could you have been sulfurising?
could he have been sulfurising?
could we have been sulfurising?
could you have been sulfurising?
could they have been sulfurising? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I sulfurise?
couldn't you sulfurise?
couldn't he sulfurise?
couldn't we sulfurise?
couldn't you sulfurise?
couldn't they sulfurise? 	couldn't I be sulfurising?
couldn't you be sulfurising?
couldn't he be sulfurising?
couldn't we be sulfurising?
couldn't you be sulfurising?
couldn't they be sulfurising? 	couldn't I have sulfurised?
couldn't you have sulfurised?
couldn't he have sulfurised?
couldn't we have sulfurised?
couldn't you have sulfurised?
couldn't they have sulfurised? 	couldn't I have been sulfurising?
couldn't you have been sulfurising?
couldn't he have been sulfurising?
couldn't we have been sulfurising?
couldn't you have been sulfurising?
couldn't they have been sulfurising?