ought to chair
Regular verb: chair - chaired- chaired

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to chair
you ought to chair
he ought to chair
we ought to chair
you ought to chair
they ought to chair 	I ought to be chairing
you ought to be chairing
he ought to be chairing
we ought to be chairing
you ought to be chairing
they ought to be chairing	I ought to have chaired
you ought to have chaired
he ought to have chaired
we ought to have chaired
you ought to have chaired
they ought to have chaired	I ought to have been chairing
you ought to have been chairing
he ought to have been chairing
we ought to have been chairing
you ought to have been chairing
they ought to have been chairing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to chair
you oughtn't to chair
he oughtn't to chair
we oughtn't to chair
you oughtn't to chair
they oughtn't to chair 	I oughtn't to be chairing
you oughtn't to be chairing
he oughtn't to be chairing
we oughtn't to be chairing
you oughtn't to be chairing
they oughtn't to be chairing	I oughtn't to have chaired
you oughtn't to have chaired
he oughtn't to have chaired
we oughtn't to have chaired
you oughtn't to have chaired
they oughtn't to have chaired	I oughtn't to have been chairing
you oughtn't to have been chairing
he oughtn't to have been chairing
we oughtn't to have been chairing
you oughtn't to have been chairing
they oughtn't to have been chairing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I chair?
ought to you chair?
ought to he chair?
ought to we chair?
ought to you chair?
ought to they chair? 	ought to I be chairing?
ought to you be chairing?
ought to he be chairing?
ought to we be chairing?
ought to you be chairing?
ought to they be chairing? 	ought to I have chaired?
ought to you have chaired?
ought to he have chaired?
ought to we have chaired?
ought to you have chaired?
ought to they have chaired? 	ought to I have been chairing?
ought to you have been chairing?
ought to he have been chairing?
ought to we have been chairing?
ought to you have been chairing?
ought to they have been chairing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to chair?
oughtn't you to chair?
oughtn't he to chair?
oughtn't we to chair?
oughtn't you to chair?
oughtn't they to chair? 	oughtn't I to be chairing?
oughtn't you to be chairing?
oughtn't he to be chairing?
oughtn't we to be chairing?
oughtn't you to be chairing?
oughtn't they to be chairing? 	oughtn't I to have chaired?
oughtn't you to have chaired?
oughtn't he to have chaired?
oughtn't we to have chaired?
oughtn't you to have chaired?
oughtn't they to have chaired? 	oughtn't I to have been chairing?
oughtn't you to have been chairing?
oughtn't he to have been chairing?
oughtn't we to have been chairing?
oughtn't you to have been chairing?
oughtn't they to have been chairing?