should centre
Regular verb: centre - centred- centred

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not centre
you should not centre
he should not centre
we should not centre
you should not centre
they should not centre 	I should not be centring
you should not be centring
he should not be centring
we should not be centring
you should not be centring
they should not be centring	I should not have centred
you should not have centred
he should not have centred
we should not have centred
you should not have centred
they should not have centred	I should not have been centring
you should not have been centring
he should not have been centring
we should not have been centring
you should not have been centring
they should not have been centring	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not centre?
should you not centre?
should he not centre?
should we not centre?
should you not centre?
should they not centre? 	should I not be centring?
should you not be centring?
should he not be centring?
should we not be centring?
should you not be centring?
should they not be centring? 	should I not have centred?
should you not have centred?
should he not have centred?
should we not have centred?
should you not have centred?
should they not have centred? 	should I not have been centring?
should you not have been centring?
should he not have been centring?
should we not have been centring?
should you not have been centring?
should they not have been centring?