English verb conjugation
OUGHT TO IMPUGN

Regular verb: impugn - impugned - impugned

Affirmation

Simple form	V-ing form
I ought to impugn you ought to impugn he ought to impugn we ought to impugn you ought to impugn they ought to impugn	I ought to be impugning you ought to be impugning he ought to be impugning we ought to be impugning you ought to be impugning they ought to be impugning
Perfect	V-ing perfect
I ought to have impugned you ought to have impugned he ought to have impugned we ought to have impugned you ought to have impugned they ought to have impugned	I ought to have been impugning you ought to have been impugning he ought to have been impugning we ought to have been impugning you ought to have been impugning they ought to have been impugning

Negation

Simple form	V-ing form
I oughtn't to impugn you oughtn't to impugn he oughtn't to impugn we oughtn't to impugn you oughtn't to impugn they oughtn't to impugn	I oughtn't to be impugning you oughtn't to be impugning he oughtn't to be impugning we oughtn't to be impugning you oughtn't to be impugning they oughtn't to be impugning
Perfect	V-ing perfect
I oughtn't to have impugned you oughtn't to have impugned he oughtn't to have impugned we oughtn't to have impugned you oughtn't to have impugned they oughtn't to have impugned	I oughtn't to have been impugning you oughtn't to have been impugning he oughtn't to have been impugning we oughtn't to have been impugning you oughtn't to have been impugning they oughtn't to have been impugning

Interrogative form

Simple form	V-ing form
ought to I impugn? ought to you impugn? ought to he impugn? ought to we impugn? ought to you impugn? ought to they impugn?	ought to I be impugning? ought to you be impugning? ought to he be impugning? ought to we be impugning? ought to you be impugning? ought to they be impugning?
Perfect	V-ing perfect
ought to I have impugned? ought to you have impugned? ought to he have impugned? ought to we have impugned? ought to you have impugned? ought to they have impugned?	ought to I have been impugning? ought to you have been impugning? ought to he have been impugning? ought to we have been impugning? ought to you have been impugning? ought to they have been impugning?

Interro-negative form

Simple form	V-ing form
oughtn't I to impugn? oughtn't you to impugn? oughtn't he to impugn? oughtn't we to impugn? oughtn't you to impugn? oughtn't they to impugn?	oughtn't I to be impugning? oughtn't you to be impugning? oughtn't he to be impugning? oughtn't we to be impugning? oughtn't you to be impugning? oughtn't they to be impugning?
Perfect	V-ing perfect
oughtn't I to have impugned? oughtn't you to have impugned? oughtn't he to have impugned? oughtn't we to have impugned? oughtn't you to have impugned? oughtn't they to have impugned?	oughtn't I to have been impugning? oughtn't you to have been impugning? oughtn't he to have been impugning? oughtn't we to have been impugning? oughtn't you to have been impugning? oughtn't they to have been impugning?