English verb conjugation
COULD COLONISE

Regular verb: colonise - colonised - colonised

Affirmation

Simple form	V-ing form
I could colonise you could colonise he could colonise we could colonise you could colonise they could colonise	I could be colonising you could be colonising he could be colonising we could be colonising you could be colonising they could be colonising
Perfect	V-ing perfect
I could have colonised you could have colonised he could have colonised we could have colonised you could have colonised they could have colonised	I could have been colonising you could have been colonising he could have been colonising we could have been colonising you could have been colonising they could have been colonising

Negation

Simple form	V-ing form
I couldn't colonise you couldn't colonise he couldn't colonise we couldn't colonise you couldn't colonise they couldn't colonise	I couldn't be colonising you couldn't be colonising he couldn't be colonising we couldn't be colonising you couldn't be colonising they couldn't be colonising
Perfect	V-ing perfect
I couldn't have colonised you couldn't have colonised he couldn't have colonised we couldn't have colonised you couldn't have colonised they couldn't have colonised	I couldn't have been colonising you couldn't have been colonising he couldn't have been colonising we couldn't have been colonising you couldn't have been colonising they couldn't have been colonising

Interrogative form

Simple form	V-ing form
could I colonise? could you colonise? could he colonise? could we colonise? could you colonise? could they colonise?	could I be colonising? could you be colonising? could he be colonising? could we be colonising? could you be colonising? could they be colonising?
Perfect	V-ing perfect
could I have colonised? could you have colonised? could he have colonised? could we have colonised? could you have colonised? could they have colonised?	could I have been colonising? could you have been colonising? could he have been colonising? could we have been colonising? could you have been colonising? could they have been colonising?

Interro-negative form

Simple form	V-ing form
couldn't I colonise? couldn't you colonise? couldn't he colonise? couldn't we colonise? couldn't you colonise? couldn't they colonise?	couldn't I be colonising? couldn't you be colonising? couldn't he be colonising? couldn't we be colonising? couldn't you be colonising? couldn't they be colonising?
Perfect	V-ing perfect
couldn't I have colonised? couldn't you have colonised? couldn't he have colonised? couldn't we have colonised? couldn't you have colonised? couldn't they have colonised?	couldn't I have been colonising? couldn't you have been colonising? couldn't he have been colonising? couldn't we have been colonising? couldn't you have been colonising? couldn't they have been colonising?