should staple
Regular verb: staple - stapled- stapled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should staple
you should staple
he should staple
we should staple
you should staple
they should staple 	I should be stapling
you should be stapling
he should be stapling
we should be stapling
you should be stapling
they should be stapling	I should have stapled
you should have stapled
he should have stapled
we should have stapled
you should have stapled
they should have stapled	I should have been stapling
you should have been stapling
he should have been stapling
we should have been stapling
you should have been stapling
they should have been stapling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not staple
you should not staple
he should not staple
we should not staple
you should not staple
they should not staple 	I should not be stapling
you should not be stapling
he should not be stapling
we should not be stapling
you should not be stapling
they should not be stapling	I should not have stapled
you should not have stapled
he should not have stapled
we should not have stapled
you should not have stapled
they should not have stapled	I should not have been stapling
you should not have been stapling
he should not have been stapling
we should not have been stapling
you should not have been stapling
they should not have been stapling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I staple?
should you staple?
should he staple?
should we staple?
should you staple?
should they staple? 	should I be stapling?
should you be stapling?
should he be stapling?
should we be stapling?
should you be stapling?
should they be stapling? 	should I have stapled?
should you have stapled?
should he have stapled?
should we have stapled?
should you have stapled?
should they have stapled? 	should I have been stapling?
should you have been stapling?
should he have been stapling?
should we have been stapling?
should you have been stapling?
should they have been stapling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not staple?
should you not staple?
should he not staple?
should we not staple?
should you not staple?
should they not staple? 	should I not be stapling?
should you not be stapling?
should he not be stapling?
should we not be stapling?
should you not be stapling?
should they not be stapling? 	should I not have stapled?
should you not have stapled?
should he not have stapled?
should we not have stapled?
should you not have stapled?
should they not have stapled? 	should I not have been stapling?
should you not have been stapling?
should he not have been stapling?
should we not have been stapling?
should you not have been stapling?
should they not have been stapling?