should staple
Regular verb: staple - stapled- stapled

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