should centre
Regular verb: centre - centred- centred

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

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