English verb conjugation
COULD COLOURIZE

Regular verb: colourize - colourized - colourized

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?