English verb conjugation
SHOULD REGRET

Regular verb: regret - regreted - regreted

Affirmation

Simple form	V-ing form
I should regret you should regret he should regret we should regret you should regret they should regret	I should be regreting you should be regreting he should be regreting we should be regreting you should be regreting they should be regreting
Perfect	V-ing perfect
I should have regreted you should have regreted he should have regreted we should have regreted you should have regreted they should have regreted	I should have been regreting you should have been regreting he should have been regreting we should have been regreting you should have been regreting they should have been regreting

Negation

Simple form	V-ing form
I should not regret you should not regret he should not regret we should not regret you should not regret they should not regret	I should not be regreting you should not be regreting he should not be regreting we should not be regreting you should not be regreting they should not be regreting
Perfect	V-ing perfect
I should not have regreted you should not have regreted he should not have regreted we should not have regreted you should not have regreted they should not have regreted	I should not have been regreting you should not have been regreting he should not have been regreting we should not have been regreting you should not have been regreting they should not have been regreting

Interrogative form

Simple form	V-ing form
should I regret? should you regret? should he regret? should we regret? should you regret? should they regret?	should I be regreting? should you be regreting? should he be regreting? should we be regreting? should you be regreting? should they be regreting?
Perfect	V-ing perfect
should I have regreted? should you have regreted? should he have regreted? should we have regreted? should you have regreted? should they have regreted?	should I have been regreting? should you have been regreting? should he have been regreting? should we have been regreting? should you have been regreting? should they have been regreting?

Interro-negative form

Simple form	V-ing form
should I not regret? should you not regret? should he not regret? should we not regret? should you not regret? should they not regret?	should I not be regreting? should you not be regreting? should he not be regreting? should we not be regreting? should you not be regreting? should they not be regreting?
Perfect	V-ing perfect
should I not have regreted? should you not have regreted? should he not have regreted? should we not have regreted? should you not have regreted? should they not have regreted?	should I not have been regreting? should you not have been regreting? should he not have been regreting? should we not have been regreting? should you not have been regreting? should they not have been regreting?