ought to attenuate
Regular verb: attenuate - attenuated- attenuated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to attenuate
you ought to attenuate
he ought to attenuate
we ought to attenuate
you ought to attenuate
they ought to attenuate 	I ought to be attenuating
you ought to be attenuating
he ought to be attenuating
we ought to be attenuating
you ought to be attenuating
they ought to be attenuating	I ought to have attenuated
you ought to have attenuated
he ought to have attenuated
we ought to have attenuated
you ought to have attenuated
they ought to have attenuated	I ought to have been attenuating
you ought to have been attenuating
he ought to have been attenuating
we ought to have been attenuating
you ought to have been attenuating
they ought to have been attenuating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to attenuate
you oughtn't to attenuate
he oughtn't to attenuate
we oughtn't to attenuate
you oughtn't to attenuate
they oughtn't to attenuate 	I oughtn't to be attenuating
you oughtn't to be attenuating
he oughtn't to be attenuating
we oughtn't to be attenuating
you oughtn't to be attenuating
they oughtn't to be attenuating	I oughtn't to have attenuated
you oughtn't to have attenuated
he oughtn't to have attenuated
we oughtn't to have attenuated
you oughtn't to have attenuated
they oughtn't to have attenuated	I oughtn't to have been attenuating
you oughtn't to have been attenuating
he oughtn't to have been attenuating
we oughtn't to have been attenuating
you oughtn't to have been attenuating
they oughtn't to have been attenuating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I attenuate?
ought to you attenuate?
ought to he attenuate?
ought to we attenuate?
ought to you attenuate?
ought to they attenuate? 	ought to I be attenuating?
ought to you be attenuating?
ought to he be attenuating?
ought to we be attenuating?
ought to you be attenuating?
ought to they be attenuating? 	ought to I have attenuated?
ought to you have attenuated?
ought to he have attenuated?
ought to we have attenuated?
ought to you have attenuated?
ought to they have attenuated? 	ought to I have been attenuating?
ought to you have been attenuating?
ought to he have been attenuating?
ought to we have been attenuating?
ought to you have been attenuating?
ought to they have been attenuating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to attenuate?
oughtn't you to attenuate?
oughtn't he to attenuate?
oughtn't we to attenuate?
oughtn't you to attenuate?
oughtn't they to attenuate? 	oughtn't I to be attenuating?
oughtn't you to be attenuating?
oughtn't he to be attenuating?
oughtn't we to be attenuating?
oughtn't you to be attenuating?
oughtn't they to be attenuating? 	oughtn't I to have attenuated?
oughtn't you to have attenuated?
oughtn't he to have attenuated?
oughtn't we to have attenuated?
oughtn't you to have attenuated?
oughtn't they to have attenuated? 	oughtn't I to have been attenuating?
oughtn't you to have been attenuating?
oughtn't he to have been attenuating?
oughtn't we to have been attenuating?
oughtn't you to have been attenuating?
oughtn't they to have been attenuating?