could colourize
Verbo regular: colourize - colourized- colourized

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could colourize
you could colourize
he could colourize
we could colourize
you could colourize
they could colourize 	I could be colourizing
you could be colourizing
he could be colourizing
we could be colourizing
you could be colourizing
they could be colourizing	I could have colourized
you could have colourized
he could have colourized
we could have colourized
you could have colourized
they could have colourized	I could have been colourizing
you could have been colourizing
he could have been colourizing
we could have been colourizing
you could have been colourizing
they could have been colourizing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't colourize
you couldn't colourize
he couldn't colourize
we couldn't colourize
you couldn't colourize
they couldn't colourize 	I couldn't be colourizing
you couldn't be colourizing
he couldn't be colourizing
we couldn't be colourizing
you couldn't be colourizing
they couldn't be colourizing	I couldn't have colourized
you couldn't have colourized
he couldn't have colourized
we couldn't have colourized
you couldn't have colourized
they couldn't have colourized	I couldn't have been colourizing
you couldn't have been colourizing
he couldn't have been colourizing
we couldn't have been colourizing
you couldn't have been colourizing
they couldn't have been colourizing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I colourize?
could you colourize?
could he colourize?
could we colourize?
could you colourize?
could they colourize? 	could I be colourizing?
could you be colourizing?
could he be colourizing?
could we be colourizing?
could you be colourizing?
could they be colourizing? 	could I have colourized?
could you have colourized?
could he have colourized?
could we have colourized?
could you have colourized?
could they have colourized? 	could I have been colourizing?
could you have been colourizing?
could he have been colourizing?
could we have been colourizing?
could you have been colourizing?
could they have been colourizing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I colourize?
couldn't you colourize?
couldn't he colourize?
couldn't we colourize?
couldn't you colourize?
couldn't they colourize? 	couldn't I be colourizing?
couldn't you be colourizing?
couldn't he be colourizing?
couldn't we be colourizing?
couldn't you be colourizing?
couldn't they be colourizing? 	couldn't I have colourized?
couldn't you have colourized?
couldn't he have colourized?
couldn't we have colourized?
couldn't you have colourized?
couldn't they have colourized? 	couldn't I have been colourizing?
couldn't you have been colourizing?
couldn't he have been colourizing?
couldn't we have been colourizing?
couldn't you have been colourizing?
couldn't they have been colourizing?