should buttonhole
Regular verb: buttonhole - buttonholed- buttonholed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd buttonhole
you'd buttonhole
he'd buttonhole
we'd buttonhole
you'd buttonhole
they'd buttonhole 	I'd be buttonholing
you'd be buttonholing
he'd be buttonholing
we'd be buttonholing
you'd be buttonholing
they'd be buttonholing	I should've buttonholed
you should've buttonholed
he should've buttonholed
we should've buttonholed
you should've buttonholed
they should've buttonholed	I should've been buttonholing
you should've been buttonholing
he should've been buttonholing
we should've been buttonholing
you should've been buttonholing
they should've been buttonholing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't buttonhole
you shouldn't buttonhole
he shouldn't buttonhole
we shouldn't buttonhole
you shouldn't buttonhole
they shouldn't buttonhole 	I shouldn't be buttonholing
you shouldn't be buttonholing
he shouldn't be buttonholing
we shouldn't be buttonholing
you shouldn't be buttonholing
they shouldn't be buttonholing	I shouldn't have buttonholed
you shouldn't have buttonholed
he shouldn't have buttonholed
we shouldn't have buttonholed
you shouldn't have buttonholed
they shouldn't have buttonholed	I shouldn't have been buttonholing
you shouldn't have been buttonholing
he shouldn't have been buttonholing
we shouldn't have been buttonholing
you shouldn't have been buttonholing
they shouldn't have been buttonholing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I buttonhole?
should you buttonhole?
should he buttonhole?
should we buttonhole?
should you buttonhole?
should they buttonhole? 	should I be buttonholing?
should you be buttonholing?
should he be buttonholing?
should we be buttonholing?
should you be buttonholing?
should they be buttonholing? 	should I have buttonholed?
should you have buttonholed?
should he 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 he 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 	
shouldn't I buttonhole?
shouldn't you buttonhole?
shouldn't he buttonhole?
shouldn't we buttonhole?
shouldn't you buttonhole?
shouldn't they buttonhole? 	shouldn't I be buttonholing?
shouldn't you be buttonholing?
shouldn't he be buttonholing?
shouldn't we be buttonholing?
shouldn't you be buttonholing?
shouldn't they be buttonholing? 	shouldn't I have buttonholed?
shouldn't you have buttonholed?
shouldn't he have buttonholed?
shouldn't we have buttonholed?
shouldn't you have buttonholed?
shouldn't they have buttonholed? 	shouldn't I have been buttonholing?
shouldn't you have been buttonholing?
shouldn't he have been buttonholing?
shouldn't we have been buttonholing?
shouldn't you have been buttonholing?
shouldn't they have been buttonholing?