could sulfurise
Verbo regular: sulfurise - sulfurised- sulfurised

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not sulfurise
you could not sulfurise
he could not sulfurise
we could not sulfurise
you could not sulfurise
they could not sulfurise 	I could not be sulfurising
you could not be sulfurising
he could not be sulfurising
we could not be sulfurising
you could not be sulfurising
they could not be sulfurising	I could not have sulfurised
you could not have sulfurised
he could not have sulfurised
we could not have sulfurised
you could not have sulfurised
they could not have sulfurised	I could not have been sulfurising
you could not have been sulfurising
he could not have been sulfurising
we could not have been sulfurising
you could not have been sulfurising
they could not have been sulfurising	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not sulfurise?
could you not sulfurise?
could he not sulfurise?
could we not sulfurise?
could you not sulfurise?
could they not sulfurise? 	could I not be sulfurising?
could you not be sulfurising?
could he not be sulfurising?
could we not be sulfurising?
could you not be sulfurising?
could they not be sulfurising? 	could I not have sulfurised?
could you not have sulfurised?
could he not have sulfurised?
could we not have sulfurised?
could you not have sulfurised?
could they not have sulfurised? 	could I not have been sulfurising?
could you not have been sulfurising?
could he not have been sulfurising?
could we not have been sulfurising?
could you not have been sulfurising?
could they not have been sulfurising?