English verb conjugation
OUGHT TO COUNTERVAIL

Regular verb: countervail - countervailed - countervailed

Affirmation

Simple form	V-ing form
I ought to countervail you ought to countervail he ought to countervail we ought to countervail you ought to countervail they ought to countervail	I ought to be countervailing you ought to be countervailing he ought to be countervailing we ought to be countervailing you ought to be countervailing they ought to be countervailing
Perfect	V-ing perfect
I ought to have countervailed you ought to have countervailed he ought to have countervailed we ought to have countervailed you ought to have countervailed they ought to have countervailed	I ought to have been countervailing you ought to have been countervailing he ought to have been countervailing we ought to have been countervailing you ought to have been countervailing they ought to have been countervailing

Negation

Simple form	V-ing form
I oughtn't to countervail you oughtn't to countervail he oughtn't to countervail we oughtn't to countervail you oughtn't to countervail they oughtn't to countervail	I oughtn't to be countervailing you oughtn't to be countervailing he oughtn't to be countervailing we oughtn't to be countervailing you oughtn't to be countervailing they oughtn't to be countervailing
Perfect	V-ing perfect
I oughtn't to have countervailed you oughtn't to have countervailed he oughtn't to have countervailed we oughtn't to have countervailed you oughtn't to have countervailed they oughtn't to have countervailed	I oughtn't to have been countervailing you oughtn't to have been countervailing he oughtn't to have been countervailing we oughtn't to have been countervailing you oughtn't to have been countervailing they oughtn't to have been countervailing

Interrogative form

Simple form	V-ing form
ought to I countervail? ought to you countervail? ought to he countervail? ought to we countervail? ought to you countervail? ought to they countervail?	ought to I be countervailing? ought to you be countervailing? ought to he be countervailing? ought to we be countervailing? ought to you be countervailing? ought to they be countervailing?
Perfect	V-ing perfect
ought to I have countervailed? ought to you have countervailed? ought to he have countervailed? ought to we have countervailed? ought to you have countervailed? ought to they have countervailed?	ought to I have been countervailing? ought to you have been countervailing? ought to he have been countervailing? ought to we have been countervailing? ought to you have been countervailing? ought to they have been countervailing?

Interro-negative form

Simple form	V-ing form
oughtn't I to countervail? oughtn't you to countervail? oughtn't he to countervail? oughtn't we to countervail? oughtn't you to countervail? oughtn't they to countervail?	oughtn't I to be countervailing? oughtn't you to be countervailing? oughtn't he to be countervailing? oughtn't we to be countervailing? oughtn't you to be countervailing? oughtn't they to be countervailing?
Perfect	V-ing perfect
oughtn't I to have countervailed? oughtn't you to have countervailed? oughtn't he to have countervailed? oughtn't we to have countervailed? oughtn't you to have countervailed? oughtn't they to have countervailed?	oughtn't I to have been countervailing? oughtn't you to have been countervailing? oughtn't he to have been countervailing? oughtn't we to have been countervailing? oughtn't you to have been countervailing? oughtn't they to have been countervailing?