English verb conjugation
OUGHT TO QUACK

Regular verb: quack - quacked - quacked

Affirmation

Simple form	V-ing form
I ought to quack you ought to quack she ought to quack we ought to quack you ought to quack they ought to quack	I ought to be quacking you ought to be quacking she ought to be quacking we ought to be quacking you ought to be quacking they ought to be quacking
Perfect	V-ing perfect
I ought to have quacked you ought to have quacked she ought to have quacked we ought to have quacked you ought to have quacked they ought to have quacked	I ought to have been quacking you ought to have been quacking she ought to have been quacking we ought to have been quacking you ought to have been quacking they ought to have been quacking

Negation

Simple form	V-ing form
I oughtn't to quack you oughtn't to quack she oughtn't to quack we oughtn't to quack you oughtn't to quack they oughtn't to quack	I oughtn't to be quacking you oughtn't to be quacking she oughtn't to be quacking we oughtn't to be quacking you oughtn't to be quacking they oughtn't to be quacking
Perfect	V-ing perfect
I oughtn't to have quacked you oughtn't to have quacked she oughtn't to have quacked we oughtn't to have quacked you oughtn't to have quacked they oughtn't to have quacked	I oughtn't to have been quacking you oughtn't to have been quacking she oughtn't to have been quacking we oughtn't to have been quacking you oughtn't to have been quacking they oughtn't to have been quacking

Interrogative form

Simple form	V-ing form
ought to I quack? ought to you quack? ought to she quack? ought to we quack? ought to you quack? ought to they quack?	ought to I be quacking? ought to you be quacking? ought to she be quacking? ought to we be quacking? ought to you be quacking? ought to they be quacking?
Perfect	V-ing perfect
ought to I have quacked? ought to you have quacked? ought to she have quacked? ought to we have quacked? ought to you have quacked? ought to they have quacked?	ought to I have been quacking? ought to you have been quacking? ought to she have been quacking? ought to we have been quacking? ought to you have been quacking? ought to they have been quacking?

Interro-negative form

Simple form	V-ing form
oughtn't I to quack? oughtn't you to quack? oughtn't she to quack? oughtn't we to quack? oughtn't you to quack? oughtn't they to quack?	oughtn't I to be quacking? oughtn't you to be quacking? oughtn't she to be quacking? oughtn't we to be quacking? oughtn't you to be quacking? oughtn't they to be quacking?
Perfect	V-ing perfect
oughtn't I to have quacked? oughtn't you to have quacked? oughtn't she to have quacked? oughtn't we to have quacked? oughtn't you to have quacked? oughtn't they to have quacked?	oughtn't I to have been quacking? oughtn't you to have been quacking? oughtn't she to have been quacking? oughtn't we to have been quacking? oughtn't you to have been quacking? oughtn't they to have been quacking?