English verb conjugation
CAN CENTRE

Regular verb: centre - centred - centred

Affirmation

Simple form	V-ing form
I can centre you can centre he can centre we can centre you can centre they can centre	I can be centring you can be centring he can be centring we can be centring you can be centring they can be centring
Perfect	V-ing perfect
I can have centred you can have centred he can have centred we can have centred you can have centred they can have centred	I can have been centring you can have been centring he can have been centring we can have been centring you can have been centring they can have been centring

Negation

Simple form	V-ing form
I can't centre you can't centre he can't centre we can't centre you can't centre they can't centre	I can't be centring you can't be centring he can't be centring we can't be centring you can't be centring they can't be centring
Perfect	V-ing perfect
I can't have centred you can't have centred he can't have centred we can't have centred you can't have centred they can't have centred	I can't have been centring you can't have been centring he can't have been centring we can't have been centring you can't have been centring they can't have been centring

Interrogative form

Simple form	V-ing form
can I centre? can you centre? can he centre? can we centre? can you centre? can they centre?	can I be centring? can you be centring? can he be centring? can we be centring? can you be centring? can they be centring?
Perfect	V-ing perfect
can I have centred? can you have centred? can he have centred? can we have centred? can you have centred? can they have centred?	can I have been centring? can you have been centring? can he have been centring? can we have been centring? can you have been centring? can they have been centring?

Interro-negative form

Simple form	V-ing form
can't I centre? can't you centre? can't he centre? can't we centre? can't you centre? can't they centre?	can't I be centring? can't you be centring? can't he be centring? can't we be centring? can't you be centring? can't they be centring?
Perfect	V-ing perfect
can't I have centred? can't you have centred? can't he have centred? can't we have centred? can't you have centred? can't they have centred?	can't I have been centring? can't you have been centring? can't he have been centring? can't we have been centring? can't you have been centring? can't they have been centring?