English verb conjugation
COULD OVERCOLOUR

Regular verb: overcolour - overcoloured - overcoloured

Affirmation

Simple form	V-ing form
I could overcolour you could overcolour he could overcolour we could overcolour you could overcolour they could overcolour	I could be overcolouring you could be overcolouring he could be overcolouring we could be overcolouring you could be overcolouring they could be overcolouring
Perfect	V-ing perfect
I could have overcoloured you could have overcoloured he could have overcoloured we could have overcoloured you could have overcoloured they could have overcoloured	I could have been overcolouring you could have been overcolouring he could have been overcolouring we could have been overcolouring you could have been overcolouring they could have been overcolouring

Negation

Simple form	V-ing form
I couldn't overcolour you couldn't overcolour he couldn't overcolour we couldn't overcolour you couldn't overcolour they couldn't overcolour	I couldn't be overcolouring you couldn't be overcolouring he couldn't be overcolouring we couldn't be overcolouring you couldn't be overcolouring they couldn't be overcolouring
Perfect	V-ing perfect
I couldn't have overcoloured you couldn't have overcoloured he couldn't have overcoloured we couldn't have overcoloured you couldn't have overcoloured they couldn't have overcoloured	I couldn't have been overcolouring you couldn't have been overcolouring he couldn't have been overcolouring we couldn't have been overcolouring you couldn't have been overcolouring they couldn't have been overcolouring

Interrogative form

Simple form	V-ing form
could I overcolour? could you overcolour? could he overcolour? could we overcolour? could you overcolour? could they overcolour?	could I be overcolouring? could you be overcolouring? could he be overcolouring? could we be overcolouring? could you be overcolouring? could they be overcolouring?
Perfect	V-ing perfect
could I have overcoloured? could you have overcoloured? could he have overcoloured? could we have overcoloured? could you have overcoloured? could they have overcoloured?	could I have been overcolouring? could you have been overcolouring? could he have been overcolouring? could we have been overcolouring? could you have been overcolouring? could they have been overcolouring?

Interro-negative form

Simple form	V-ing form
couldn't I overcolour? couldn't you overcolour? couldn't he overcolour? couldn't we overcolour? couldn't you overcolour? couldn't they overcolour?	couldn't I be overcolouring? couldn't you be overcolouring? couldn't he be overcolouring? couldn't we be overcolouring? couldn't you be overcolouring? couldn't they be overcolouring?
Perfect	V-ing perfect
couldn't I have overcoloured? couldn't you have overcoloured? couldn't he have overcoloured? couldn't we have overcoloured? couldn't you have overcoloured? couldn't they have overcoloured?	couldn't I have been overcolouring? couldn't you have been overcolouring? couldn't he have been overcolouring? couldn't we have been overcolouring? couldn't you have been overcolouring? couldn't they have been overcolouring?