English verb conjugation
SHOULD CENTRE

Regular verb: centre - centred - centred

Affirmation

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