ought to straighten
Regular verb: straighten - straightened- straightened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to straighten
you ought to straighten
he ought to straighten
we ought to straighten
you ought to straighten
they ought to straighten 	I ought to be straightening
you ought to be straightening
he ought to be straightening
we ought to be straightening
you ought to be straightening
they ought to be straightening	I ought to have straightened
you ought to have straightened
he ought to have straightened
we ought to have straightened
you ought to have straightened
they ought to have straightened	I ought to have been straightening
you ought to have been straightening
he ought to have been straightening
we ought to have been straightening
you ought to have been straightening
they ought to have been straightening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to straighten
you oughtn't to straighten
he oughtn't to straighten
we oughtn't to straighten
you oughtn't to straighten
they oughtn't to straighten 	I oughtn't to be straightening
you oughtn't to be straightening
he oughtn't to be straightening
we oughtn't to be straightening
you oughtn't to be straightening
they oughtn't to be straightening	I oughtn't to have straightened
you oughtn't to have straightened
he oughtn't to have straightened
we oughtn't to have straightened
you oughtn't to have straightened
they oughtn't to have straightened	I oughtn't to have been straightening
you oughtn't to have been straightening
he oughtn't to have been straightening
we oughtn't to have been straightening
you oughtn't to have been straightening
they oughtn't to have been straightening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I straighten?
ought to you straighten?
ought to he straighten?
ought to we straighten?
ought to you straighten?
ought to they straighten? 	ought to I be straightening?
ought to you be straightening?
ought to he be straightening?
ought to we be straightening?
ought to you be straightening?
ought to they be straightening? 	ought to I have straightened?
ought to you have straightened?
ought to he have straightened?
ought to we have straightened?
ought to you have straightened?
ought to they have straightened? 	ought to I have been straightening?
ought to you have been straightening?
ought to he have been straightening?
ought to we have been straightening?
ought to you have been straightening?
ought to they have been straightening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to straighten?
oughtn't you to straighten?
oughtn't he to straighten?
oughtn't we to straighten?
oughtn't you to straighten?
oughtn't they to straighten? 	oughtn't I to be straightening?
oughtn't you to be straightening?
oughtn't he to be straightening?
oughtn't we to be straightening?
oughtn't you to be straightening?
oughtn't they to be straightening? 	oughtn't I to have straightened?
oughtn't you to have straightened?
oughtn't he to have straightened?
oughtn't we to have straightened?
oughtn't you to have straightened?
oughtn't they to have straightened? 	oughtn't I to have been straightening?
oughtn't you to have been straightening?
oughtn't he to have been straightening?
oughtn't we to have been straightening?
oughtn't you to have been straightening?
oughtn't they to have been straightening?