ought to buttonhole
Regular verb: buttonhole - buttonholed- buttonholed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to buttonhole
you ought to buttonhole
he ought to buttonhole
we ought to buttonhole
you ought to buttonhole
they ought to buttonhole 	I ought to be buttonholing
you ought to be buttonholing
he ought to be buttonholing
we ought to be buttonholing
you ought to be buttonholing
they ought to be buttonholing	I ought to have buttonholed
you ought to have buttonholed
he ought to have buttonholed
we ought to have buttonholed
you ought to have buttonholed
they ought to have buttonholed	I ought to have been buttonholing
you ought to have been buttonholing
he ought to have been buttonholing
we ought to have been buttonholing
you ought to have been buttonholing
they ought to have been buttonholing	

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

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I buttonhole?
ought to you buttonhole?
ought to he buttonhole?
ought to we buttonhole?
ought to you buttonhole?
ought to they buttonhole? 	ought to I be buttonholing?
ought to you be buttonholing?
ought to he be buttonholing?
ought to we be buttonholing?
ought to you be buttonholing?
ought to they be buttonholing? 	ought to I have buttonholed?
ought to you have buttonholed?
ought to he have buttonholed?
ought to we have buttonholed?
ought to you have buttonholed?
ought to they have buttonholed? 	ought to I have been buttonholing?
ought to you have been buttonholing?
ought to he have been buttonholing?
ought to we have been buttonholing?
ought to you have been buttonholing?
ought to they have been buttonholing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to buttonhole?
oughtn't you to buttonhole?
oughtn't he to buttonhole?
oughtn't we to buttonhole?
oughtn't you to buttonhole?
oughtn't they to buttonhole? 	oughtn't I to be buttonholing?
oughtn't you to be buttonholing?
oughtn't he to be buttonholing?
oughtn't we to be buttonholing?
oughtn't you to be buttonholing?
oughtn't they to be buttonholing? 	oughtn't I to have buttonholed?
oughtn't you to have buttonholed?
oughtn't he to have buttonholed?
oughtn't we to have buttonholed?
oughtn't you to have buttonholed?
oughtn't they to have buttonholed? 	oughtn't I to have been buttonholing?
oughtn't you to have been buttonholing?
oughtn't he to have been buttonholing?
oughtn't we to have been buttonholing?
oughtn't you to have been buttonholing?
oughtn't they to have been buttonholing?