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
she 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
she 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
she 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
she 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 ought not to buttonhole
you ought not to buttonhole
she ought not to buttonhole
we ought not to buttonhole
you ought not to buttonhole
they ought not to buttonhole 	I ought not to buttonholing
you ought not to buttonholing
she ought not to buttonholing
we ought not to buttonholing
you ought not to buttonholing
they ought not to buttonholing	I ought not to have buttonholed
you ought not to have buttonholed
she ought not to have buttonholed
we ought not to have buttonholed
you ought not to have buttonholed
they ought not to have buttonholed	I ought not to have been buttonholing
you ought not to have been buttonholing
she ought not to have been buttonholing
we ought not to have been buttonholing
you ought not to have been buttonholing
they ought not 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 she 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 she 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 she 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 she 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 	
ought I not to buttonhole?
ought you not to buttonhole?
ought she not to buttonhole?
ought we not to buttonhole?
ought you not to buttonhole?
ought they not to buttonhole? 	ought I not to be buttonholing?
ought you not to be buttonholing?
ought she not to be buttonholing?
ought we not to be buttonholing?
ought you not to be buttonholing?
ought they not to be buttonholing? 	ought I not to have buttonholed?
ought you not to have buttonholed?
ought she not to have buttonholed?
ought we not to have buttonholed?
ought you not to have buttonholed?
ought they not to have buttonholed? 	ought I not to have been buttonholing?
ought you not to have been buttonholing?
ought she not to have been buttonholing?
ought we not to have been buttonholing?
ought you not to have been buttonholing?
ought they not to have been buttonholing?