should refute
Regular verb: refute - refuted- refuted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should refute
you should refute
he should refute
we should refute
you should refute
they should refute 	I should be refuting
you should be refuting
he should be refuting
we should be refuting
you should be refuting
they should be refuting	I should have refuted
you should have refuted
he should have refuted
we should have refuted
you should have refuted
they should have refuted	I should have been refuting
you should have been refuting
he should have been refuting
we should have been refuting
you should have been refuting
they should have been refuting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not refute
you should not refute
he should not refute
we should not refute
you should not refute
they should not refute 	I should not be refuting
you should not be refuting
he should not be refuting
we should not be refuting
you should not be refuting
they should not be refuting	I should not have refuted
you should not have refuted
he should not have refuted
we should not have refuted
you should not have refuted
they should not have refuted	I should not have been refuting
you should not have been refuting
he should not have been refuting
we should not have been refuting
you should not have been refuting
they should not have been refuting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I refute?
should you refute?
should he refute?
should we refute?
should you refute?
should they refute? 	should I be refuting?
should you be refuting?
should he be refuting?
should we be refuting?
should you be refuting?
should they be refuting? 	should I have refuted?
should you have refuted?
should he have refuted?
should we have refuted?
should you have refuted?
should they have refuted? 	should I have been refuting?
should you have been refuting?
should he have been refuting?
should we have been refuting?
should you have been refuting?
should they have been refuting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not refute?
should you not refute?
should he not refute?
should we not refute?
should you not refute?
should they not refute? 	should I not be refuting?
should you not be refuting?
should he not be refuting?
should we not be refuting?
should you not be refuting?
should they not be refuting? 	should I not have refuted?
should you not have refuted?
should he not have refuted?
should we not have refuted?
should you not have refuted?
should they not have refuted? 	should I not have been refuting?
should you not have been refuting?
should he not have been refuting?
should we not have been refuting?
should you not have been refuting?
should they not have been refuting?