English verb conjugation
OUGHT TO REPLACE

Regular verb: replace - replaced - replaced

Affirmation

Simple form	V-ing form
I ought to replace you ought to replace he ought to replace we ought to replace you ought to replace they ought to replace	I ought to be replacing you ought to be replacing he ought to be replacing we ought to be replacing you ought to be replacing they ought to be replacing
Perfect	V-ing perfect
I ought to have replaced you ought to have replaced he ought to have replaced we ought to have replaced you ought to have replaced they ought to have replaced	I ought to have been replacing you ought to have been replacing he ought to have been replacing we ought to have been replacing you ought to have been replacing they ought to have been replacing

Negation

Simple form	V-ing form
I oughtn't to replace you oughtn't to replace he oughtn't to replace we oughtn't to replace you oughtn't to replace they oughtn't to replace	I oughtn't to be replacing you oughtn't to be replacing he oughtn't to be replacing we oughtn't to be replacing you oughtn't to be replacing they oughtn't to be replacing
Perfect	V-ing perfect
I oughtn't to have replaced you oughtn't to have replaced he oughtn't to have replaced we oughtn't to have replaced you oughtn't to have replaced they oughtn't to have replaced	I oughtn't to have been replacing you oughtn't to have been replacing he oughtn't to have been replacing we oughtn't to have been replacing you oughtn't to have been replacing they oughtn't to have been replacing

Interrogative form

Simple form	V-ing form
ought to I replace? ought to you replace? ought to he replace? ought to we replace? ought to you replace? ought to they replace?	ought to I be replacing? ought to you be replacing? ought to he be replacing? ought to we be replacing? ought to you be replacing? ought to they be replacing?
Perfect	V-ing perfect
ought to I have replaced? ought to you have replaced? ought to he have replaced? ought to we have replaced? ought to you have replaced? ought to they have replaced?	ought to I have been replacing? ought to you have been replacing? ought to he have been replacing? ought to we have been replacing? ought to you have been replacing? ought to they have been replacing?

Interro-negative form

Simple form	V-ing form
oughtn't I to replace? oughtn't you to replace? oughtn't he to replace? oughtn't we to replace? oughtn't you to replace? oughtn't they to replace?	oughtn't I to be replacing? oughtn't you to be replacing? oughtn't he to be replacing? oughtn't we to be replacing? oughtn't you to be replacing? oughtn't they to be replacing?
Perfect	V-ing perfect
oughtn't I to have replaced? oughtn't you to have replaced? oughtn't he to have replaced? oughtn't we to have replaced? oughtn't you to have replaced? oughtn't they to have replaced?	oughtn't I to have been replacing? oughtn't you to have been replacing? oughtn't he to have been replacing? oughtn't we to have been replacing? oughtn't you to have been replacing? oughtn't they to have been replacing?