ought to interrogate
Regular verb: interrogate - interrogated- interrogated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to interrogate
you ought to interrogate
she ought to interrogate
we ought to interrogate
you ought to interrogate
they ought to interrogate 	I ought to be interrogating
you ought to be interrogating
she ought to be interrogating
we ought to be interrogating
you ought to be interrogating
they ought to be interrogating	I ought to have interrogated
you ought to have interrogated
she ought to have interrogated
we ought to have interrogated
you ought to have interrogated
they ought to have interrogated	I ought to have been interrogating
you ought to have been interrogating
she ought to have been interrogating
we ought to have been interrogating
you ought to have been interrogating
they ought to have been interrogating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to interrogate
you oughtn't to interrogate
she oughtn't to interrogate
we oughtn't to interrogate
you oughtn't to interrogate
they oughtn't to interrogate 	I oughtn't to be interrogating
you oughtn't to be interrogating
she oughtn't to be interrogating
we oughtn't to be interrogating
you oughtn't to be interrogating
they oughtn't to be interrogating	I oughtn't to have interrogated
you oughtn't to have interrogated
she oughtn't to have interrogated
we oughtn't to have interrogated
you oughtn't to have interrogated
they oughtn't to have interrogated	I oughtn't to have been interrogating
you oughtn't to have been interrogating
she oughtn't to have been interrogating
we oughtn't to have been interrogating
you oughtn't to have been interrogating
they oughtn't to have been interrogating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I interrogate?
ought to you interrogate?
ought to she interrogate?
ought to we interrogate?
ought to you interrogate?
ought to they interrogate? 	ought to I be interrogating?
ought to you be interrogating?
ought to she be interrogating?
ought to we be interrogating?
ought to you be interrogating?
ought to they be interrogating? 	ought to I have interrogated?
ought to you have interrogated?
ought to she have interrogated?
ought to we have interrogated?
ought to you have interrogated?
ought to they have interrogated? 	ought to I have been interrogating?
ought to you have been interrogating?
ought to she have been interrogating?
ought to we have been interrogating?
ought to you have been interrogating?
ought to they have been interrogating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to interrogate?
oughtn't you to interrogate?
oughtn't she to interrogate?
oughtn't we to interrogate?
oughtn't you to interrogate?
oughtn't they to interrogate? 	oughtn't I to be interrogating?
oughtn't you to be interrogating?
oughtn't she to be interrogating?
oughtn't we to be interrogating?
oughtn't you to be interrogating?
oughtn't they to be interrogating? 	oughtn't I to have interrogated?
oughtn't you to have interrogated?
oughtn't she to have interrogated?
oughtn't we to have interrogated?
oughtn't you to have interrogated?
oughtn't they to have interrogated? 	oughtn't I to have been interrogating?
oughtn't you to have been interrogating?
oughtn't she to have been interrogating?
oughtn't we to have been interrogating?
oughtn't you to have been interrogating?
oughtn't they to have been interrogating?