could devitalise
Verbo regular: devitalise - devitalised- devitalised

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could devitalise
you could devitalise
he could devitalise
we could devitalise
you could devitalise
they could devitalise 	I could be devitalising
you could be devitalising
he could be devitalising
we could be devitalising
you could be devitalising
they could be devitalising	I could have devitalised
you could have devitalised
he could have devitalised
we could have devitalised
you could have devitalised
they could have devitalised	I could have been devitalising
you could have been devitalising
he could have been devitalising
we could have been devitalising
you could have been devitalising
they could have been devitalising	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not devitalise
you could not devitalise
he could not devitalise
we could not devitalise
you could not devitalise
they could not devitalise 	I could not be devitalising
you could not be devitalising
he could not be devitalising
we could not be devitalising
you could not be devitalising
they could not be devitalising	I could not have devitalised
you could not have devitalised
he could not have devitalised
we could not have devitalised
you could not have devitalised
they could not have devitalised	I could not have been devitalising
you could not have been devitalising
he could not have been devitalising
we could not have been devitalising
you could not have been devitalising
they could not have been devitalising	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I devitalise?
could you devitalise?
could he devitalise?
could we devitalise?
could you devitalise?
could they devitalise? 	could I be devitalising?
could you be devitalising?
could he be devitalising?
could we be devitalising?
could you be devitalising?
could they be devitalising? 	could I have devitalised?
could you have devitalised?
could he have devitalised?
could we have devitalised?
could you have devitalised?
could they have devitalised? 	could I have been devitalising?
could you have been devitalising?
could he have been devitalising?
could we have been devitalising?
could you have been devitalising?
could they have been devitalising? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not devitalise?
could you not devitalise?
could he not devitalise?
could we not devitalise?
could you not devitalise?
could they not devitalise? 	could I not be devitalising?
could you not be devitalising?
could he not be devitalising?
could we not be devitalising?
could you not be devitalising?
could they not be devitalising? 	could I not have devitalised?
could you not have devitalised?
could he not have devitalised?
could we not have devitalised?
could you not have devitalised?
could they not have devitalised? 	could I not have been devitalising?
could you not have been devitalising?
could he not have been devitalising?
could we not have been devitalising?
could you not have been devitalising?
could they not have been devitalising?