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 ought not to countervail you ought not to countervail he ought not to countervail we ought not to countervail you ought not to countervail they ought not to countervail	I ought not to countervailing you ought not to countervailing he ought not to countervailing we ought not to countervailing you ought not to countervailing they ought not to countervailing
Perfect	V-ing perfect
I ought not to have countervailed you ought not to have countervailed he ought not to have countervailed we ought not to have countervailed you ought not to have countervailed they ought not to have countervailed	I ought not to have been countervailing you ought not to have been countervailing he ought not to have been countervailing we ought not to have been countervailing you ought not to have been countervailing they ought not 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
ought I not to countervail? ought you not to countervail? ought he not to countervail? ought we not to countervail? ought you not to countervail? ought they not to countervail?	ought I not to be countervailing? ought you not to be countervailing? ought he not to be countervailing? ought we not to be countervailing? ought you not to be countervailing? ought they not to be countervailing?
Perfect	V-ing perfect
ought I not to have countervailed? ought you not to have countervailed? ought he not to have countervailed? ought we not to have countervailed? ought you not to have countervailed? ought they not to have countervailed?	ought I not to have been countervailing? ought you not to have been countervailing? ought he not to have been countervailing? ought we not to have been countervailing? ought you not to have been countervailing? ought they not to have been countervailing?