ought to ascribe
Regular verb: ascribe - ascribed- ascribed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to ascribe
you ought to ascribe
he ought to ascribe
we ought to ascribe
you ought to ascribe
they ought to ascribe 	I ought to be ascribing
you ought to be ascribing
he ought to be ascribing
we ought to be ascribing
you ought to be ascribing
they ought to be ascribing	I ought to have ascribed
you ought to have ascribed
he ought to have ascribed
we ought to have ascribed
you ought to have ascribed
they ought to have ascribed	I ought to have been ascribing
you ought to have been ascribing
he ought to have been ascribing
we ought to have been ascribing
you ought to have been ascribing
they ought to have been ascribing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to ascribe
you oughtn't to ascribe
he oughtn't to ascribe
we oughtn't to ascribe
you oughtn't to ascribe
they oughtn't to ascribe 	I oughtn't to be ascribing
you oughtn't to be ascribing
he oughtn't to be ascribing
we oughtn't to be ascribing
you oughtn't to be ascribing
they oughtn't to be ascribing	I oughtn't to have ascribed
you oughtn't to have ascribed
he oughtn't to have ascribed
we oughtn't to have ascribed
you oughtn't to have ascribed
they oughtn't to have ascribed	I oughtn't to have been ascribing
you oughtn't to have been ascribing
he oughtn't to have been ascribing
we oughtn't to have been ascribing
you oughtn't to have been ascribing
they oughtn't to have been ascribing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I ascribe?
ought to you ascribe?
ought to he ascribe?
ought to we ascribe?
ought to you ascribe?
ought to they ascribe? 	ought to I be ascribing?
ought to you be ascribing?
ought to he be ascribing?
ought to we be ascribing?
ought to you be ascribing?
ought to they be ascribing? 	ought to I have ascribed?
ought to you have ascribed?
ought to he have ascribed?
ought to we have ascribed?
ought to you have ascribed?
ought to they have ascribed? 	ought to I have been ascribing?
ought to you have been ascribing?
ought to he have been ascribing?
ought to we have been ascribing?
ought to you have been ascribing?
ought to they have been ascribing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to ascribe?
oughtn't you to ascribe?
oughtn't he to ascribe?
oughtn't we to ascribe?
oughtn't you to ascribe?
oughtn't they to ascribe? 	oughtn't I to be ascribing?
oughtn't you to be ascribing?
oughtn't he to be ascribing?
oughtn't we to be ascribing?
oughtn't you to be ascribing?
oughtn't they to be ascribing? 	oughtn't I to have ascribed?
oughtn't you to have ascribed?
oughtn't he to have ascribed?
oughtn't we to have ascribed?
oughtn't you to have ascribed?
oughtn't they to have ascribed? 	oughtn't I to have been ascribing?
oughtn't you to have been ascribing?
oughtn't he to have been ascribing?
oughtn't we to have been ascribing?
oughtn't you to have been ascribing?
oughtn't they to have been ascribing?