English verb conjugation
OUGHT TO YAP

Regular verb: yap - yapped - yapped

Affirmation

Simple form	V-ing form
I ought to yap you ought to yap he ought to yap we ought to yap you ought to yap they ought to yap	I ought to be yapping you ought to be yapping he ought to be yapping we ought to be yapping you ought to be yapping they ought to be yapping
Perfect	V-ing perfect
I ought to have yapped you ought to have yapped he ought to have yapped we ought to have yapped you ought to have yapped they ought to have yapped	I ought to have been yapping you ought to have been yapping he ought to have been yapping we ought to have been yapping you ought to have been yapping they ought to have been yapping

Negation

Simple form	V-ing form
I oughtn't to yap you oughtn't to yap he oughtn't to yap we oughtn't to yap you oughtn't to yap they oughtn't to yap	I oughtn't to be yapping you oughtn't to be yapping he oughtn't to be yapping we oughtn't to be yapping you oughtn't to be yapping they oughtn't to be yapping
Perfect	V-ing perfect
I oughtn't to have yapped you oughtn't to have yapped he oughtn't to have yapped we oughtn't to have yapped you oughtn't to have yapped they oughtn't to have yapped	I oughtn't to have been yapping you oughtn't to have been yapping he oughtn't to have been yapping we oughtn't to have been yapping you oughtn't to have been yapping they oughtn't to have been yapping

Interrogative form

Simple form	V-ing form
ought to I yap? ought to you yap? ought to he yap? ought to we yap? ought to you yap? ought to they yap?	ought to I be yapping? ought to you be yapping? ought to he be yapping? ought to we be yapping? ought to you be yapping? ought to they be yapping?
Perfect	V-ing perfect
ought to I have yapped? ought to you have yapped? ought to he have yapped? ought to we have yapped? ought to you have yapped? ought to they have yapped?	ought to I have been yapping? ought to you have been yapping? ought to he have been yapping? ought to we have been yapping? ought to you have been yapping? ought to they have been yapping?

Interro-negative form

Simple form	V-ing form
oughtn't I to yap? oughtn't you to yap? oughtn't he to yap? oughtn't we to yap? oughtn't you to yap? oughtn't they to yap?	oughtn't I to be yapping? oughtn't you to be yapping? oughtn't he to be yapping? oughtn't we to be yapping? oughtn't you to be yapping? oughtn't they to be yapping?
Perfect	V-ing perfect
oughtn't I to have yapped? oughtn't you to have yapped? oughtn't he to have yapped? oughtn't we to have yapped? oughtn't you to have yapped? oughtn't they to have yapped?	oughtn't I to have been yapping? oughtn't you to have been yapping? oughtn't he to have been yapping? oughtn't we to have been yapping? oughtn't you to have been yapping? oughtn't they to have been yapping?