should box
Regular verb: box - boxed- boxed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should box
you should box
she should box
we should box
you should box
they should box 	I should be boxing
you should be boxing
she should be boxing
we should be boxing
you should be boxing
they should be boxing	I should have boxed
you should have boxed
she should have boxed
we should have boxed
you should have boxed
they should have boxed	I should have been boxing
you should have been boxing
she should have been boxing
we should have been boxing
you should have been boxing
they should have been boxing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not box
you should not box
she should not box
we should not box
you should not box
they should not box 	I should not be boxing
you should not be boxing
she should not be boxing
we should not be boxing
you should not be boxing
they should not be boxing	I should not have boxed
you should not have boxed
she should not have boxed
we should not have boxed
you should not have boxed
they should not have boxed	I should not have been boxing
you should not have been boxing
she should not have been boxing
we should not have been boxing
you should not have been boxing
they should not have been boxing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I box?
should you box?
should she box?
should we box?
should you box?
should they box? 	should I be boxing?
should you be boxing?
should she be boxing?
should we be boxing?
should you be boxing?
should they be boxing? 	should I have boxed?
should you have boxed?
should she have boxed?
should we have boxed?
should you have boxed?
should they have boxed? 	should I have been boxing?
should you have been boxing?
should she have been boxing?
should we have been boxing?
should you have been boxing?
should they have been boxing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not box?
should you not box?
should she not box?
should we not box?
should you not box?
should they not box? 	should I not be boxing?
should you not be boxing?
should she not be boxing?
should we not be boxing?
should you not be boxing?
should they not be boxing? 	should I not have boxed?
should you not have boxed?
should she not have boxed?
should we not have boxed?
should you not have boxed?
should they not have boxed? 	should I not have been boxing?
should you not have been boxing?
should she not have been boxing?
should we not have been boxing?
should you not have been boxing?
should they not have been boxing?