English verb conjugation
OUGHT TO VAIL

Regular verb: vail - vailed - vailed

Affirmation

Simple form	V-ing form
I ought to vail you ought to vail he ought to vail we ought to vail you ought to vail they ought to vail	I ought to be vailing you ought to be vailing he ought to be vailing we ought to be vailing you ought to be vailing they ought to be vailing
Perfect	V-ing perfect
I ought to have vailed you ought to have vailed he ought to have vailed we ought to have vailed you ought to have vailed they ought to have vailed	I ought to have been vailing you ought to have been vailing he ought to have been vailing we ought to have been vailing you ought to have been vailing they ought to have been vailing

Negation

Simple form	V-ing form
I oughtn't to vail you oughtn't to vail he oughtn't to vail we oughtn't to vail you oughtn't to vail they oughtn't to vail	I oughtn't to be vailing you oughtn't to be vailing he oughtn't to be vailing we oughtn't to be vailing you oughtn't to be vailing they oughtn't to be vailing
Perfect	V-ing perfect
I oughtn't to have vailed you oughtn't to have vailed he oughtn't to have vailed we oughtn't to have vailed you oughtn't to have vailed they oughtn't to have vailed	I oughtn't to have been vailing you oughtn't to have been vailing he oughtn't to have been vailing we oughtn't to have been vailing you oughtn't to have been vailing they oughtn't to have been vailing

Interrogative form

Simple form	V-ing form
ought to I vail? ought to you vail? ought to he vail? ought to we vail? ought to you vail? ought to they vail?	ought to I be vailing? ought to you be vailing? ought to he be vailing? ought to we be vailing? ought to you be vailing? ought to they be vailing?
Perfect	V-ing perfect
ought to I have vailed? ought to you have vailed? ought to he have vailed? ought to we have vailed? ought to you have vailed? ought to they have vailed?	ought to I have been vailing? ought to you have been vailing? ought to he have been vailing? ought to we have been vailing? ought to you have been vailing? ought to they have been vailing?

Interro-negative form

Simple form	V-ing form
oughtn't I to vail? oughtn't you to vail? oughtn't he to vail? oughtn't we to vail? oughtn't you to vail? oughtn't they to vail?	oughtn't I to be vailing? oughtn't you to be vailing? oughtn't he to be vailing? oughtn't we to be vailing? oughtn't you to be vailing? oughtn't they to be vailing?
Perfect	V-ing perfect
oughtn't I to have vailed? oughtn't you to have vailed? oughtn't he to have vailed? oughtn't we to have vailed? oughtn't you to have vailed? oughtn't they to have vailed?	oughtn't I to have been vailing? oughtn't you to have been vailing? oughtn't he to have been vailing? oughtn't we to have been vailing? oughtn't you to have been vailing? oughtn't they to have been vailing?