should regret
Regular verb: regret - regreted- regreted

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