English verb conjugation
CAN COLOUR

Regular verb: colour - coloured - coloured

Affirmation

Simple form	V-ing form
I can colour you can colour he can colour we can colour you can colour they can colour	I can be colouring you can be colouring he can be colouring we can be colouring you can be colouring they can be colouring
Perfect	V-ing perfect
I can have coloured you can have coloured he can have coloured we can have coloured you can have coloured they can have coloured	I can have been colouring you can have been colouring he can have been colouring we can have been colouring you can have been colouring they can have been colouring

Negation

Simple form	V-ing form
I cannot colour you cannot colour he cannot colour we cannot colour you cannot colour they cannot colour	I cannot be colouring you cannot be colouring he cannot be colouring we cannot be colouring you cannot be colouring they cannot be colouring
Perfect	V-ing perfect
I cannot have coloured you cannot have coloured he cannot have coloured we cannot have coloured you cannot have coloured they cannot have coloured	I cannot have been colouring you cannot have been colouring he cannot have been colouring we cannot have been colouring you cannot have been colouring they cannot have been colouring

Interrogative form

Simple form	V-ing form
can I colour? can you colour? can he colour? can we colour? can you colour? can they colour?	can I be colouring? can you be colouring? can he be colouring? can we be colouring? can you be colouring? can they be colouring?
Perfect	V-ing perfect
can I have coloured? can you have coloured? can he have coloured? can we have coloured? can you have coloured? can they have coloured?	can I have been colouring? can you have been colouring? can he have been colouring? can we have been colouring? can you have been colouring? can they have been colouring?

Interro-negative form

Simple form	V-ing form
can I not colour? can you not colour? can he not colour? can we not colour? can you not colour? can they not colour?	can I not be colouring? can you not be colouring? can he not be colouring? can we not be colouring? can you not be colouring? can they not be colouring?
Perfect	V-ing perfect
can I not have coloured? can you not have coloured? can he not have coloured? can we not have coloured? can you not have coloured? can they not have coloured?	can I not have been colouring? can you not have been colouring? can he not have been colouring? can we not have been colouring? can you not have been colouring? can they not have been colouring?