ought to nitrify
Regular verb: nitrify - nitrified- nitrified

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to nitrify
you ought to nitrify
she ought to nitrify
we ought to nitrify
you ought to nitrify
they ought to nitrify 	I ought to be nitrifying
you ought to be nitrifying
she ought to be nitrifying
we ought to be nitrifying
you ought to be nitrifying
they ought to be nitrifying	I ought to have nitrified
you ought to have nitrified
she ought to have nitrified
we ought to have nitrified
you ought to have nitrified
they ought to have nitrified	I ought to have been nitrifying
you ought to have been nitrifying
she ought to have been nitrifying
we ought to have been nitrifying
you ought to have been nitrifying
they ought to have been nitrifying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to nitrify
you oughtn't to nitrify
she oughtn't to nitrify
we oughtn't to nitrify
you oughtn't to nitrify
they oughtn't to nitrify 	I oughtn't to be nitrifying
you oughtn't to be nitrifying
she oughtn't to be nitrifying
we oughtn't to be nitrifying
you oughtn't to be nitrifying
they oughtn't to be nitrifying	I oughtn't to have nitrified
you oughtn't to have nitrified
she oughtn't to have nitrified
we oughtn't to have nitrified
you oughtn't to have nitrified
they oughtn't to have nitrified	I oughtn't to have been nitrifying
you oughtn't to have been nitrifying
she oughtn't to have been nitrifying
we oughtn't to have been nitrifying
you oughtn't to have been nitrifying
they oughtn't to have been nitrifying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I nitrify?
ought to you nitrify?
ought to she nitrify?
ought to we nitrify?
ought to you nitrify?
ought to they nitrify? 	ought to I be nitrifying?
ought to you be nitrifying?
ought to she be nitrifying?
ought to we be nitrifying?
ought to you be nitrifying?
ought to they be nitrifying? 	ought to I have nitrified?
ought to you have nitrified?
ought to she have nitrified?
ought to we have nitrified?
ought to you have nitrified?
ought to they have nitrified? 	ought to I have been nitrifying?
ought to you have been nitrifying?
ought to she have been nitrifying?
ought to we have been nitrifying?
ought to you have been nitrifying?
ought to they have been nitrifying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to nitrify?
oughtn't you to nitrify?
oughtn't she to nitrify?
oughtn't we to nitrify?
oughtn't you to nitrify?
oughtn't they to nitrify? 	oughtn't I to be nitrifying?
oughtn't you to be nitrifying?
oughtn't she to be nitrifying?
oughtn't we to be nitrifying?
oughtn't you to be nitrifying?
oughtn't they to be nitrifying? 	oughtn't I to have nitrified?
oughtn't you to have nitrified?
oughtn't she to have nitrified?
oughtn't we to have nitrified?
oughtn't you to have nitrified?
oughtn't they to have nitrified? 	oughtn't I to have been nitrifying?
oughtn't you to have been nitrifying?
oughtn't she to have been nitrifying?
oughtn't we to have been nitrifying?
oughtn't you to have been nitrifying?
oughtn't they to have been nitrifying?