could decarburise
Verbo regular: decarburise - decarburised- decarburised

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could decarburise
you could decarburise
he could decarburise
we could decarburise
you could decarburise
they could decarburise 	I could be decarburising
you could be decarburising
he could be decarburising
we could be decarburising
you could be decarburising
they could be decarburising	I could have decarburised
you could have decarburised
he could have decarburised
we could have decarburised
you could have decarburised
they could have decarburised	I could have been decarburising
you could have been decarburising
he could have been decarburising
we could have been decarburising
you could have been decarburising
they could have been decarburising	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not decarburise
you could not decarburise
he could not decarburise
we could not decarburise
you could not decarburise
they could not decarburise 	I could not be decarburising
you could not be decarburising
he could not be decarburising
we could not be decarburising
you could not be decarburising
they could not be decarburising	I could not have decarburised
you could not have decarburised
he could not have decarburised
we could not have decarburised
you could not have decarburised
they could not have decarburised	I could not have been decarburising
you could not have been decarburising
he could not have been decarburising
we could not have been decarburising
you could not have been decarburising
they could not have been decarburising	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I decarburise?
could you decarburise?
could he decarburise?
could we decarburise?
could you decarburise?
could they decarburise? 	could I be decarburising?
could you be decarburising?
could he be decarburising?
could we be decarburising?
could you be decarburising?
could they be decarburising? 	could I have decarburised?
could you have decarburised?
could he have decarburised?
could we have decarburised?
could you have decarburised?
could they have decarburised? 	could I have been decarburising?
could you have been decarburising?
could he have been decarburising?
could we have been decarburising?
could you have been decarburising?
could they have been decarburising? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not decarburise?
could you not decarburise?
could he not decarburise?
could we not decarburise?
could you not decarburise?
could they not decarburise? 	could I not be decarburising?
could you not be decarburising?
could he not be decarburising?
could we not be decarburising?
could you not be decarburising?
could they not be decarburising? 	could I not have decarburised?
could you not have decarburised?
could he not have decarburised?
could we not have decarburised?
could you not have decarburised?
could they not have decarburised? 	could I not have been decarburising?
could you not have been decarburising?
could he not have been decarburising?
could we not have been decarburising?
could you not have been decarburising?
could they not have been decarburising?