ought to denitrify
Regular verb: denitrify - denitrified- denitrified

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to denitrify
you ought to denitrify
she ought to denitrify
we ought to denitrify
you ought to denitrify
they ought to denitrify 	I ought to be denitrifying
you ought to be denitrifying
she ought to be denitrifying
we ought to be denitrifying
you ought to be denitrifying
they ought to be denitrifying	I ought to have denitrified
you ought to have denitrified
she ought to have denitrified
we ought to have denitrified
you ought to have denitrified
they ought to have denitrified	I ought to have been denitrifying
you ought to have been denitrifying
she ought to have been denitrifying
we ought to have been denitrifying
you ought to have been denitrifying
they ought to have been denitrifying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to denitrify
you oughtn't to denitrify
she oughtn't to denitrify
we oughtn't to denitrify
you oughtn't to denitrify
they oughtn't to denitrify 	I oughtn't to be denitrifying
you oughtn't to be denitrifying
she oughtn't to be denitrifying
we oughtn't to be denitrifying
you oughtn't to be denitrifying
they oughtn't to be denitrifying	I oughtn't to have denitrified
you oughtn't to have denitrified
she oughtn't to have denitrified
we oughtn't to have denitrified
you oughtn't to have denitrified
they oughtn't to have denitrified	I oughtn't to have been denitrifying
you oughtn't to have been denitrifying
she oughtn't to have been denitrifying
we oughtn't to have been denitrifying
you oughtn't to have been denitrifying
they oughtn't to have been denitrifying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I denitrify?
ought to you denitrify?
ought to she denitrify?
ought to we denitrify?
ought to you denitrify?
ought to they denitrify? 	ought to I be denitrifying?
ought to you be denitrifying?
ought to she be denitrifying?
ought to we be denitrifying?
ought to you be denitrifying?
ought to they be denitrifying? 	ought to I have denitrified?
ought to you have denitrified?
ought to she have denitrified?
ought to we have denitrified?
ought to you have denitrified?
ought to they have denitrified? 	ought to I have been denitrifying?
ought to you have been denitrifying?
ought to she have been denitrifying?
ought to we have been denitrifying?
ought to you have been denitrifying?
ought to they have been denitrifying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to denitrify?
oughtn't you to denitrify?
oughtn't she to denitrify?
oughtn't we to denitrify?
oughtn't you to denitrify?
oughtn't they to denitrify? 	oughtn't I to be denitrifying?
oughtn't you to be denitrifying?
oughtn't she to be denitrifying?
oughtn't we to be denitrifying?
oughtn't you to be denitrifying?
oughtn't they to be denitrifying? 	oughtn't I to have denitrified?
oughtn't you to have denitrified?
oughtn't she to have denitrified?
oughtn't we to have denitrified?
oughtn't you to have denitrified?
oughtn't they to have denitrified? 	oughtn't I to have been denitrifying?
oughtn't you to have been denitrifying?
oughtn't she to have been denitrifying?
oughtn't we to have been denitrifying?
oughtn't you to have been denitrifying?
oughtn't they to have been denitrifying?