English verb conjugation
CAN DISCOLOUR

Regular verb: discolour - discoloured - discoloured

Affirmation

Simple form	V-ing form
I can discolour you can discolour he can discolour we can discolour you can discolour they can discolour	I can be discolouring you can be discolouring he can be discolouring we can be discolouring you can be discolouring they can be discolouring
Perfect	V-ing perfect
I can have discoloured you can have discoloured he can have discoloured we can have discoloured you can have discoloured they can have discoloured	I can have been discolouring you can have been discolouring he can have been discolouring we can have been discolouring you can have been discolouring they can have been discolouring

Negation

Simple form	V-ing form
I cannot discolour you cannot discolour he cannot discolour we cannot discolour you cannot discolour they cannot discolour	I cannot be discolouring you cannot be discolouring he cannot be discolouring we cannot be discolouring you cannot be discolouring they cannot be discolouring
Perfect	V-ing perfect
I cannot have discoloured you cannot have discoloured he cannot have discoloured we cannot have discoloured you cannot have discoloured they cannot have discoloured	I cannot have been discolouring you cannot have been discolouring he cannot have been discolouring we cannot have been discolouring you cannot have been discolouring they cannot have been discolouring

Interrogative form

Simple form	V-ing form
can I discolour? can you discolour? can he discolour? can we discolour? can you discolour? can they discolour?	can I be discolouring? can you be discolouring? can he be discolouring? can we be discolouring? can you be discolouring? can they be discolouring?
Perfect	V-ing perfect
can I have discoloured? can you have discoloured? can he have discoloured? can we have discoloured? can you have discoloured? can they have discoloured?	can I have been discolouring? can you have been discolouring? can he have been discolouring? can we have been discolouring? can you have been discolouring? can they have been discolouring?

Interro-negative form

Simple form	V-ing form
can I not discolour? can you not discolour? can he not discolour? can we not discolour? can you not discolour? can they not discolour?	can I not be discolouring? can you not be discolouring? can he not be discolouring? can we not be discolouring? can you not be discolouring? can they not be discolouring?
Perfect	V-ing perfect
can I not have discoloured? can you not have discoloured? can he not have discoloured? can we not have discoloured? can you not have discoloured? can they not have discoloured?	can I not have been discolouring? can you not have been discolouring? can he not have been discolouring? can we not have been discolouring? can you not have been discolouring? can they not have been discolouring?