ought to erase
Regular verb: erase - erased- erased

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to erase
you ought to erase
he ought to erase
we ought to erase
you ought to erase
they ought to erase 	I ought to be erasing
you ought to be erasing
he ought to be erasing
we ought to be erasing
you ought to be erasing
they ought to be erasing	I ought to have erased
you ought to have erased
he ought to have erased
we ought to have erased
you ought to have erased
they ought to have erased	I ought to have been erasing
you ought to have been erasing
he ought to have been erasing
we ought to have been erasing
you ought to have been erasing
they ought to have been erasing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to erase
you oughtn't to erase
he oughtn't to erase
we oughtn't to erase
you oughtn't to erase
they oughtn't to erase 	I oughtn't to be erasing
you oughtn't to be erasing
he oughtn't to be erasing
we oughtn't to be erasing
you oughtn't to be erasing
they oughtn't to be erasing	I oughtn't to have erased
you oughtn't to have erased
he oughtn't to have erased
we oughtn't to have erased
you oughtn't to have erased
they oughtn't to have erased	I oughtn't to have been erasing
you oughtn't to have been erasing
he oughtn't to have been erasing
we oughtn't to have been erasing
you oughtn't to have been erasing
they oughtn't to have been erasing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I erase?
ought to you erase?
ought to he erase?
ought to we erase?
ought to you erase?
ought to they erase? 	ought to I be erasing?
ought to you be erasing?
ought to he be erasing?
ought to we be erasing?
ought to you be erasing?
ought to they be erasing? 	ought to I have erased?
ought to you have erased?
ought to he have erased?
ought to we have erased?
ought to you have erased?
ought to they have erased? 	ought to I have been erasing?
ought to you have been erasing?
ought to he have been erasing?
ought to we have been erasing?
ought to you have been erasing?
ought to they have been erasing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to erase?
oughtn't you to erase?
oughtn't he to erase?
oughtn't we to erase?
oughtn't you to erase?
oughtn't they to erase? 	oughtn't I to be erasing?
oughtn't you to be erasing?
oughtn't he to be erasing?
oughtn't we to be erasing?
oughtn't you to be erasing?
oughtn't they to be erasing? 	oughtn't I to have erased?
oughtn't you to have erased?
oughtn't he to have erased?
oughtn't we to have erased?
oughtn't you to have erased?
oughtn't they to have erased? 	oughtn't I to have been erasing?
oughtn't you to have been erasing?
oughtn't he to have been erasing?
oughtn't we to have been erasing?
oughtn't you to have been erasing?
oughtn't they to have been erasing?