English verb conjugation
SHOULD CENTRE

Regular verb: centre - centred - centred

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?