should buttress
Regular verb: buttress - buttressed- buttressed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should buttress
you should buttress
she should buttress
we should buttress
you should buttress
they should buttress 	I should be buttressing
you should be buttressing
she should be buttressing
we should be buttressing
you should be buttressing
they should be buttressing	I should have buttressed
you should have buttressed
she should have buttressed
we should have buttressed
you should have buttressed
they should have buttressed	I should have been buttressing
you should have been buttressing
she should have been buttressing
we should have been buttressing
you should have been buttressing
they should have been buttressing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not buttress
you should not buttress
she should not buttress
we should not buttress
you should not buttress
they should not buttress 	I should not be buttressing
you should not be buttressing
she should not be buttressing
we should not be buttressing
you should not be buttressing
they should not be buttressing	I should not have buttressed
you should not have buttressed
she should not have buttressed
we should not have buttressed
you should not have buttressed
they should not have buttressed	I should not have been buttressing
you should not have been buttressing
she should not have been buttressing
we should not have been buttressing
you should not have been buttressing
they should not have been buttressing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I buttress?
should you buttress?
should she buttress?
should we buttress?
should you buttress?
should they buttress? 	should I be buttressing?
should you be buttressing?
should she be buttressing?
should we be buttressing?
should you be buttressing?
should they be buttressing? 	should I have buttressed?
should you have buttressed?
should she have buttressed?
should we have buttressed?
should you have buttressed?
should they have buttressed? 	should I have been buttressing?
should you have been buttressing?
should she have been buttressing?
should we have been buttressing?
should you have been buttressing?
should they have been buttressing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not buttress?
should you not buttress?
should she not buttress?
should we not buttress?
should you not buttress?
should they not buttress? 	should I not be buttressing?
should you not be buttressing?
should she not be buttressing?
should we not be buttressing?
should you not be buttressing?
should they not be buttressing? 	should I not have buttressed?
should you not have buttressed?
should she not have buttressed?
should we not have buttressed?
should you not have buttressed?
should they not have buttressed? 	should I not have been buttressing?
should you not have been buttressing?
should she not have been buttressing?
should we not have been buttressing?
should you not have been buttressing?
should they not have been buttressing?