English verb conjugation
OUGHT TO PERDURE

Regular verb: perdure - perdured - perdured

Affirmation

Simple form	V-ing form
I ought to perdure you ought to perdure she ought to perdure we ought to perdure you ought to perdure they ought to perdure	I ought to be perduring you ought to be perduring she ought to be perduring we ought to be perduring you ought to be perduring they ought to be perduring
Perfect	V-ing perfect
I ought to have perdured you ought to have perdured she ought to have perdured we ought to have perdured you ought to have perdured they ought to have perdured	I ought to have been perduring you ought to have been perduring she ought to have been perduring we ought to have been perduring you ought to have been perduring they ought to have been perduring

Negation

Simple form	V-ing form
I oughtn't to perdure you oughtn't to perdure she oughtn't to perdure we oughtn't to perdure you oughtn't to perdure they oughtn't to perdure	I oughtn't to be perduring you oughtn't to be perduring she oughtn't to be perduring we oughtn't to be perduring you oughtn't to be perduring they oughtn't to be perduring
Perfect	V-ing perfect
I oughtn't to have perdured you oughtn't to have perdured she oughtn't to have perdured we oughtn't to have perdured you oughtn't to have perdured they oughtn't to have perdured	I oughtn't to have been perduring you oughtn't to have been perduring she oughtn't to have been perduring we oughtn't to have been perduring you oughtn't to have been perduring they oughtn't to have been perduring

Interrogative form

Simple form	V-ing form
ought to I perdure? ought to you perdure? ought to she perdure? ought to we perdure? ought to you perdure? ought to they perdure?	ought to I be perduring? ought to you be perduring? ought to she be perduring? ought to we be perduring? ought to you be perduring? ought to they be perduring?
Perfect	V-ing perfect
ought to I have perdured? ought to you have perdured? ought to she have perdured? ought to we have perdured? ought to you have perdured? ought to they have perdured?	ought to I have been perduring? ought to you have been perduring? ought to she have been perduring? ought to we have been perduring? ought to you have been perduring? ought to they have been perduring?

Interro-negative form

Simple form	V-ing form
oughtn't I to perdure? oughtn't you to perdure? oughtn't she to perdure? oughtn't we to perdure? oughtn't you to perdure? oughtn't they to perdure?	oughtn't I to be perduring? oughtn't you to be perduring? oughtn't she to be perduring? oughtn't we to be perduring? oughtn't you to be perduring? oughtn't they to be perduring?
Perfect	V-ing perfect
oughtn't I to have perdured? oughtn't you to have perdured? oughtn't she to have perdured? oughtn't we to have perdured? oughtn't you to have perdured? oughtn't they to have perdured?	oughtn't I to have been perduring? oughtn't you to have been perduring? oughtn't she to have been perduring? oughtn't we to have been perduring? oughtn't you to have been perduring? oughtn't they to have been perduring?