ought to prepurchase
Verbo regular: prepurchase - prepurchased- prepurchased

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought to prepurchase
you ought to prepurchase
he ought to prepurchase
we ought to prepurchase
you ought to prepurchase
they ought to prepurchase 	I ought to be prepurchasing
you ought to be prepurchasing
he ought to be prepurchasing
we ought to be prepurchasing
you ought to be prepurchasing
they ought to be prepurchasing	I ought to have prepurchased
you ought to have prepurchased
he ought to have prepurchased
we ought to have prepurchased
you ought to have prepurchased
they ought to have prepurchased	I ought to have been prepurchasing
you ought to have been prepurchasing
he ought to have been prepurchasing
we ought to have been prepurchasing
you ought to have been prepurchasing
they ought to have been prepurchasing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I oughtn't to prepurchase
you oughtn't to prepurchase
he oughtn't to prepurchase
we oughtn't to prepurchase
you oughtn't to prepurchase
they oughtn't to prepurchase 	I oughtn't to be prepurchasing
you oughtn't to be prepurchasing
he oughtn't to be prepurchasing
we oughtn't to be prepurchasing
you oughtn't to be prepurchasing
they oughtn't to be prepurchasing	I oughtn't to have prepurchased
you oughtn't to have prepurchased
he oughtn't to have prepurchased
we oughtn't to have prepurchased
you oughtn't to have prepurchased
they oughtn't to have prepurchased	I oughtn't to have been prepurchasing
you oughtn't to have been prepurchasing
he oughtn't to have been prepurchasing
we oughtn't to have been prepurchasing
you oughtn't to have been prepurchasing
they oughtn't to have been prepurchasing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought to I prepurchase?
ought to you prepurchase?
ought to he prepurchase?
ought to we prepurchase?
ought to you prepurchase?
ought to they prepurchase? 	ought to I be prepurchasing?
ought to you be prepurchasing?
ought to he be prepurchasing?
ought to we be prepurchasing?
ought to you be prepurchasing?
ought to they be prepurchasing? 	ought to I have prepurchased?
ought to you have prepurchased?
ought to he have prepurchased?
ought to we have prepurchased?
ought to you have prepurchased?
ought to they have prepurchased? 	ought to I have been prepurchasing?
ought to you have been prepurchasing?
ought to he have been prepurchasing?
ought to we have been prepurchasing?
ought to you have been prepurchasing?
ought to they have been prepurchasing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
oughtn't I to prepurchase?
oughtn't you to prepurchase?
oughtn't he to prepurchase?
oughtn't we to prepurchase?
oughtn't you to prepurchase?
oughtn't they to prepurchase? 	oughtn't I to be prepurchasing?
oughtn't you to be prepurchasing?
oughtn't he to be prepurchasing?
oughtn't we to be prepurchasing?
oughtn't you to be prepurchasing?
oughtn't they to be prepurchasing? 	oughtn't I to have prepurchased?
oughtn't you to have prepurchased?
oughtn't he to have prepurchased?
oughtn't we to have prepurchased?
oughtn't you to have prepurchased?
oughtn't they to have prepurchased? 	oughtn't I to have been prepurchasing?
oughtn't you to have been prepurchasing?
oughtn't he to have been prepurchasing?
oughtn't we to have been prepurchasing?
oughtn't you to have been prepurchasing?
oughtn't they to have been prepurchasing?