English verb conjugation
COULD COLOURISE

Regular verb: colourise - colourised - colourised

Affirmation

Simple form	V-ing form
I could colourise you could colourise he could colourise we could colourise you could colourise they could colourise	I could be colourising you could be colourising he could be colourising we could be colourising you could be colourising they could be colourising
Perfect	V-ing perfect
I could have colourised you could have colourised he could have colourised we could have colourised you could have colourised they could have colourised	I could have been colourising you could have been colourising he could have been colourising we could have been colourising you could have been colourising they could have been colourising

Negation

Simple form	V-ing form
I could not colourise you could not colourise he could not colourise we could not colourise you could not colourise they could not colourise	I could not be colourising you could not be colourising he could not be colourising we could not be colourising you could not be colourising they could not be colourising
Perfect	V-ing perfect
I could not have colourised you could not have colourised he could not have colourised we could not have colourised you could not have colourised they could not have colourised	I could not have been colourising you could not have been colourising he could not have been colourising we could not have been colourising you could not have been colourising they could not have been colourising

Interrogative form

Simple form	V-ing form
could I colourise? could you colourise? could he colourise? could we colourise? could you colourise? could they colourise?	could I be colourising? could you be colourising? could he be colourising? could we be colourising? could you be colourising? could they be colourising?
Perfect	V-ing perfect
could I have colourised? could you have colourised? could he have colourised? could we have colourised? could you have colourised? could they have colourised?	could I have been colourising? could you have been colourising? could he have been colourising? could we have been colourising? could you have been colourising? could they have been colourising?

Interro-negative form

Simple form	V-ing form
could I not colourise? could you not colourise? could he not colourise? could we not colourise? could you not colourise? could they not colourise?	could I not be colourising? could you not be colourising? could he not be colourising? could we not be colourising? could you not be colourising? could they not be colourising?
Perfect	V-ing perfect
could I not have colourised? could you not have colourised? could he not have colourised? could we not have colourised? could you not have colourised? could they not have colourised?	could I not have been colourising? could you not have been colourising? could he not have been colourising? could we not have been colourising? could you not have been colourising? could they not have been colourising?