could decolourise
Verbo regular: decolourise - decolourised- decolourised

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could decolourise
you could decolourise
he could decolourise
we could decolourise
you could decolourise
they could decolourise 	I could be decolourising
you could be decolourising
he could be decolourising
we could be decolourising
you could be decolourising
they could be decolourising	I could have decolourised
you could have decolourised
he could have decolourised
we could have decolourised
you could have decolourised
they could have decolourised	I could have been decolourising
you could have been decolourising
he could have been decolourising
we could have been decolourising
you could have been decolourising
they could have been decolourising	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not decolourise
you could not decolourise
he could not decolourise
we could not decolourise
you could not decolourise
they could not decolourise 	I could not be decolourising
you could not be decolourising
he could not be decolourising
we could not be decolourising
you could not be decolourising
they could not be decolourising	I could not have decolourised
you could not have decolourised
he could not have decolourised
we could not have decolourised
you could not have decolourised
they could not have decolourised	I could not have been decolourising
you could not have been decolourising
he could not have been decolourising
we could not have been decolourising
you could not have been decolourising
they could not have been decolourising	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I decolourise?
could you decolourise?
could he decolourise?
could we decolourise?
could you decolourise?
could they decolourise? 	could I be decolourising?
could you be decolourising?
could he be decolourising?
could we be decolourising?
could you be decolourising?
could they be decolourising? 	could I have decolourised?
could you have decolourised?
could he have decolourised?
could we have decolourised?
could you have decolourised?
could they have decolourised? 	could I have been decolourising?
could you have been decolourising?
could he have been decolourising?
could we have been decolourising?
could you have been decolourising?
could they have been decolourising? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not decolourise?
could you not decolourise?
could he not decolourise?
could we not decolourise?
could you not decolourise?
could they not decolourise? 	could I not be decolourising?
could you not be decolourising?
could he not be decolourising?
could we not be decolourising?
could you not be decolourising?
could they not be decolourising? 	could I not have decolourised?
could you not have decolourised?
could he not have decolourised?
could we not have decolourised?
could you not have decolourised?
could they not have decolourised? 	could I not have been decolourising?
could you not have been decolourising?
could he not have been decolourising?
could we not have been decolourising?
could you not have been decolourising?
could they not have been decolourising?