English verb conjugation
OUGHT TO PREVAIL

Regular verb: prevail - prevailed - prevailed

Affirmation

Simple form	V-ing form
I ought to prevail you ought to prevail she ought to prevail we ought to prevail you ought to prevail they ought to prevail	I ought to be prevailing you ought to be prevailing she ought to be prevailing we ought to be prevailing you ought to be prevailing they ought to be prevailing
Perfect	V-ing perfect
I ought to have prevailed you ought to have prevailed she ought to have prevailed we ought to have prevailed you ought to have prevailed they ought to have prevailed	I ought to have been prevailing you ought to have been prevailing she ought to have been prevailing we ought to have been prevailing you ought to have been prevailing they ought to have been prevailing

Negation

Simple form	V-ing form
I oughtn't to prevail you oughtn't to prevail she oughtn't to prevail we oughtn't to prevail you oughtn't to prevail they oughtn't to prevail	I oughtn't to be prevailing you oughtn't to be prevailing she oughtn't to be prevailing we oughtn't to be prevailing you oughtn't to be prevailing they oughtn't to be prevailing
Perfect	V-ing perfect
I oughtn't to have prevailed you oughtn't to have prevailed she oughtn't to have prevailed we oughtn't to have prevailed you oughtn't to have prevailed they oughtn't to have prevailed	I oughtn't to have been prevailing you oughtn't to have been prevailing she oughtn't to have been prevailing we oughtn't to have been prevailing you oughtn't to have been prevailing they oughtn't to have been prevailing

Interrogative form

Simple form	V-ing form
ought to I prevail? ought to you prevail? ought to she prevail? ought to we prevail? ought to you prevail? ought to they prevail?	ought to I be prevailing? ought to you be prevailing? ought to she be prevailing? ought to we be prevailing? ought to you be prevailing? ought to they be prevailing?
Perfect	V-ing perfect
ought to I have prevailed? ought to you have prevailed? ought to she have prevailed? ought to we have prevailed? ought to you have prevailed? ought to they have prevailed?	ought to I have been prevailing? ought to you have been prevailing? ought to she have been prevailing? ought to we have been prevailing? ought to you have been prevailing? ought to they have been prevailing?

Interro-negative form

Simple form	V-ing form
oughtn't I to prevail? oughtn't you to prevail? oughtn't she to prevail? oughtn't we to prevail? oughtn't you to prevail? oughtn't they to prevail?	oughtn't I to be prevailing? oughtn't you to be prevailing? oughtn't she to be prevailing? oughtn't we to be prevailing? oughtn't you to be prevailing? oughtn't they to be prevailing?
Perfect	V-ing perfect
oughtn't I to have prevailed? oughtn't you to have prevailed? oughtn't she to have prevailed? oughtn't we to have prevailed? oughtn't you to have prevailed? oughtn't they to have prevailed?	oughtn't I to have been prevailing? oughtn't you to have been prevailing? oughtn't she to have been prevailing? oughtn't we to have been prevailing? oughtn't you to have been prevailing? oughtn't they to have been prevailing?