ought to presterilise
Regular verb: presterilise - presterilised- presterilised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to presterilise
you ought to presterilise
he ought to presterilise
we ought to presterilise
you ought to presterilise
they ought to presterilise 	I ought to be presterilising
you ought to be presterilising
he ought to be presterilising
we ought to be presterilising
you ought to be presterilising
they ought to be presterilising	I ought to have presterilised
you ought to have presterilised
he ought to have presterilised
we ought to have presterilised
you ought to have presterilised
they ought to have presterilised	I ought to have been presterilising
you ought to have been presterilising
he ought to have been presterilising
we ought to have been presterilising
you ought to have been presterilising
they ought to have been presterilising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to presterilise
you oughtn't to presterilise
he oughtn't to presterilise
we oughtn't to presterilise
you oughtn't to presterilise
they oughtn't to presterilise 	I oughtn't to be presterilising
you oughtn't to be presterilising
he oughtn't to be presterilising
we oughtn't to be presterilising
you oughtn't to be presterilising
they oughtn't to be presterilising	I oughtn't to have presterilised
you oughtn't to have presterilised
he oughtn't to have presterilised
we oughtn't to have presterilised
you oughtn't to have presterilised
they oughtn't to have presterilised	I oughtn't to have been presterilising
you oughtn't to have been presterilising
he oughtn't to have been presterilising
we oughtn't to have been presterilising
you oughtn't to have been presterilising
they oughtn't to have been presterilising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I presterilise?
ought to you presterilise?
ought to he presterilise?
ought to we presterilise?
ought to you presterilise?
ought to they presterilise? 	ought to I be presterilising?
ought to you be presterilising?
ought to he be presterilising?
ought to we be presterilising?
ought to you be presterilising?
ought to they be presterilising? 	ought to I have presterilised?
ought to you have presterilised?
ought to he have presterilised?
ought to we have presterilised?
ought to you have presterilised?
ought to they have presterilised? 	ought to I have been presterilising?
ought to you have been presterilising?
ought to he have been presterilising?
ought to we have been presterilising?
ought to you have been presterilising?
ought to they have been presterilising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to presterilise?
oughtn't you to presterilise?
oughtn't he to presterilise?
oughtn't we to presterilise?
oughtn't you to presterilise?
oughtn't they to presterilise? 	oughtn't I to be presterilising?
oughtn't you to be presterilising?
oughtn't he to be presterilising?
oughtn't we to be presterilising?
oughtn't you to be presterilising?
oughtn't they to be presterilising? 	oughtn't I to have presterilised?
oughtn't you to have presterilised?
oughtn't he to have presterilised?
oughtn't we to have presterilised?
oughtn't you to have presterilised?
oughtn't they to have presterilised? 	oughtn't I to have been presterilising?
oughtn't you to have been presterilising?
oughtn't he to have been presterilising?
oughtn't we to have been presterilising?
oughtn't you to have been presterilising?
oughtn't they to have been presterilising?