ought to preinform
Regular verb: preinform - preinformed- preinformed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to preinform
you ought to preinform
he ought to preinform
we ought to preinform
you ought to preinform
they ought to preinform 	I ought to be preinforming
you ought to be preinforming
he ought to be preinforming
we ought to be preinforming
you ought to be preinforming
they ought to be preinforming	I ought to have preinformed
you ought to have preinformed
he ought to have preinformed
we ought to have preinformed
you ought to have preinformed
they ought to have preinformed	I ought to have been preinforming
you ought to have been preinforming
he ought to have been preinforming
we ought to have been preinforming
you ought to have been preinforming
they ought to have been preinforming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to preinform
you oughtn't to preinform
he oughtn't to preinform
we oughtn't to preinform
you oughtn't to preinform
they oughtn't to preinform 	I oughtn't to be preinforming
you oughtn't to be preinforming
he oughtn't to be preinforming
we oughtn't to be preinforming
you oughtn't to be preinforming
they oughtn't to be preinforming	I oughtn't to have preinformed
you oughtn't to have preinformed
he oughtn't to have preinformed
we oughtn't to have preinformed
you oughtn't to have preinformed
they oughtn't to have preinformed	I oughtn't to have been preinforming
you oughtn't to have been preinforming
he oughtn't to have been preinforming
we oughtn't to have been preinforming
you oughtn't to have been preinforming
they oughtn't to have been preinforming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I preinform?
ought to you preinform?
ought to he preinform?
ought to we preinform?
ought to you preinform?
ought to they preinform? 	ought to I be preinforming?
ought to you be preinforming?
ought to he be preinforming?
ought to we be preinforming?
ought to you be preinforming?
ought to they be preinforming? 	ought to I have preinformed?
ought to you have preinformed?
ought to he have preinformed?
ought to we have preinformed?
ought to you have preinformed?
ought to they have preinformed? 	ought to I have been preinforming?
ought to you have been preinforming?
ought to he have been preinforming?
ought to we have been preinforming?
ought to you have been preinforming?
ought to they have been preinforming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to preinform?
oughtn't you to preinform?
oughtn't he to preinform?
oughtn't we to preinform?
oughtn't you to preinform?
oughtn't they to preinform? 	oughtn't I to be preinforming?
oughtn't you to be preinforming?
oughtn't he to be preinforming?
oughtn't we to be preinforming?
oughtn't you to be preinforming?
oughtn't they to be preinforming? 	oughtn't I to have preinformed?
oughtn't you to have preinformed?
oughtn't he to have preinformed?
oughtn't we to have preinformed?
oughtn't you to have preinformed?
oughtn't they to have preinformed? 	oughtn't I to have been preinforming?
oughtn't you to have been preinforming?
oughtn't he to have been preinforming?
oughtn't we to have been preinforming?
oughtn't you to have been preinforming?
oughtn't they to have been preinforming?