should buttonhole
Regular verb: buttonhole - buttonholed- buttonholed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should buttonhole
you should buttonhole
she should buttonhole
we should buttonhole
you should buttonhole
they should buttonhole 	I should be buttonholing
you should be buttonholing
she should be buttonholing
we should be buttonholing
you should be buttonholing
they should be buttonholing	I should have buttonholed
you should have buttonholed
she should have buttonholed
we should have buttonholed
you should have buttonholed
they should have buttonholed	I should have been buttonholing
you should have been buttonholing
she should have been buttonholing
we should have been buttonholing
you should have been buttonholing
they should have been buttonholing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I should not buttonhole
you should not buttonhole
she should not buttonhole
we should not buttonhole
you should not buttonhole
they should not buttonhole 	I should not be buttonholing
you should not be buttonholing
she should not be buttonholing
we should not be buttonholing
you should not be buttonholing
they should not be buttonholing	I should not have buttonholed
you should not have buttonholed
she should not have buttonholed
we should not have buttonholed
you should not have buttonholed
they should not have buttonholed	I should not have been buttonholing
you should not have been buttonholing
she should not have been buttonholing
we should not have been buttonholing
you should not have been buttonholing
they should not have been buttonholing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I buttonhole?
should you buttonhole?
should she buttonhole?
should we buttonhole?
should you buttonhole?
should they buttonhole? 	should I be buttonholing?
should you be buttonholing?
should she be buttonholing?
should we be buttonholing?
should you be buttonholing?
should they be buttonholing? 	should I have buttonholed?
should you have buttonholed?
should she have buttonholed?
should we have buttonholed?
should you have buttonholed?
should they have buttonholed? 	should I have been buttonholing?
should you have been buttonholing?
should she have been buttonholing?
should we have been buttonholing?
should you have been buttonholing?
should they have been buttonholing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I not buttonhole?
should you not buttonhole?
should she not buttonhole?
should we not buttonhole?
should you not buttonhole?
should they not buttonhole? 	should I not be buttonholing?
should you not be buttonholing?
should she not be buttonholing?
should we not be buttonholing?
should you not be buttonholing?
should they not be buttonholing? 	should I not have buttonholed?
should you not have buttonholed?
should she not have buttonholed?
should we not have buttonholed?
should you not have buttonholed?
should they not have buttonholed? 	should I not have been buttonholing?
should you not have been buttonholing?
should she not have been buttonholing?
should we not have been buttonholing?
should you not have been buttonholing?
should they not have been buttonholing?