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 can't discolour you can't discolour he can't discolour we can't discolour you can't discolour they can't discolour	I can't be discolouring you can't be discolouring he can't be discolouring we can't be discolouring you can't be discolouring they can't be discolouring
Perfect	V-ing perfect
I can't have discoloured you can't have discoloured he can't have discoloured we can't have discoloured you can't have discoloured they can't have discoloured	I can't have been discolouring you can't have been discolouring he can't have been discolouring we can't have been discolouring you can't have been discolouring they can't 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't I discolour? can't you discolour? can't he discolour? can't we discolour? can't you discolour? can't they discolour?	can't I be discolouring? can't you be discolouring? can't he be discolouring? can't we be discolouring? can't you be discolouring? can't they be discolouring?
Perfect	V-ing perfect
can't I have discoloured? can't you have discoloured? can't he have discoloured? can't we have discoloured? can't you have discoloured? can't they have discoloured?	can't I have been discolouring? can't you have been discolouring? can't he have been discolouring? can't we have been discolouring? can't you have been discolouring? can't they have been discolouring?