English verb conjugation
OUGHT TO RETRIEVE

Regular verb: retrieve - retrieved - retrieved

Affirmation

Simple form	V-ing form
I ought to retrieve you ought to retrieve he ought to retrieve we ought to retrieve you ought to retrieve they ought to retrieve	I ought to be retrieving you ought to be retrieving he ought to be retrieving we ought to be retrieving you ought to be retrieving they ought to be retrieving
Perfect	V-ing perfect
I ought to have retrieved you ought to have retrieved he ought to have retrieved we ought to have retrieved you ought to have retrieved they ought to have retrieved	I ought to have been retrieving you ought to have been retrieving he ought to have been retrieving we ought to have been retrieving you ought to have been retrieving they ought to have been retrieving

Negation

Simple form	V-ing form
I oughtn't to retrieve you oughtn't to retrieve he oughtn't to retrieve we oughtn't to retrieve you oughtn't to retrieve they oughtn't to retrieve	I oughtn't to be retrieving you oughtn't to be retrieving he oughtn't to be retrieving we oughtn't to be retrieving you oughtn't to be retrieving they oughtn't to be retrieving
Perfect	V-ing perfect
I oughtn't to have retrieved you oughtn't to have retrieved he oughtn't to have retrieved we oughtn't to have retrieved you oughtn't to have retrieved they oughtn't to have retrieved	I oughtn't to have been retrieving you oughtn't to have been retrieving he oughtn't to have been retrieving we oughtn't to have been retrieving you oughtn't to have been retrieving they oughtn't to have been retrieving

Interrogative form

Simple form	V-ing form
ought to I retrieve? ought to you retrieve? ought to he retrieve? ought to we retrieve? ought to you retrieve? ought to they retrieve?	ought to I be retrieving? ought to you be retrieving? ought to he be retrieving? ought to we be retrieving? ought to you be retrieving? ought to they be retrieving?
Perfect	V-ing perfect
ought to I have retrieved? ought to you have retrieved? ought to he have retrieved? ought to we have retrieved? ought to you have retrieved? ought to they have retrieved?	ought to I have been retrieving? ought to you have been retrieving? ought to he have been retrieving? ought to we have been retrieving? ought to you have been retrieving? ought to they have been retrieving?

Interro-negative form

Simple form	V-ing form
oughtn't I to retrieve? oughtn't you to retrieve? oughtn't he to retrieve? oughtn't we to retrieve? oughtn't you to retrieve? oughtn't they to retrieve?	oughtn't I to be retrieving? oughtn't you to be retrieving? oughtn't he to be retrieving? oughtn't we to be retrieving? oughtn't you to be retrieving? oughtn't they to be retrieving?
Perfect	V-ing perfect
oughtn't I to have retrieved? oughtn't you to have retrieved? oughtn't he to have retrieved? oughtn't we to have retrieved? oughtn't you to have retrieved? oughtn't they to have retrieved?	oughtn't I to have been retrieving? oughtn't you to have been retrieving? oughtn't he to have been retrieving? oughtn't we to have been retrieving? oughtn't you to have been retrieving? oughtn't they to have been retrieving?