English verb conjugation
OUGHT TO YAWN

Regular verb: yawn - yawned - yawned

Affirmation

Simple form	V-ing form
I ought to yawn you ought to yawn he ought to yawn we ought to yawn you ought to yawn they ought to yawn	I ought to be yawning you ought to be yawning he ought to be yawning we ought to be yawning you ought to be yawning they ought to be yawning
Perfect	V-ing perfect
I ought to have yawned you ought to have yawned he ought to have yawned we ought to have yawned you ought to have yawned they ought to have yawned	I ought to have been yawning you ought to have been yawning he ought to have been yawning we ought to have been yawning you ought to have been yawning they ought to have been yawning

Negation

Simple form	V-ing form
I oughtn't to yawn you oughtn't to yawn he oughtn't to yawn we oughtn't to yawn you oughtn't to yawn they oughtn't to yawn	I oughtn't to be yawning you oughtn't to be yawning he oughtn't to be yawning we oughtn't to be yawning you oughtn't to be yawning they oughtn't to be yawning
Perfect	V-ing perfect
I oughtn't to have yawned you oughtn't to have yawned he oughtn't to have yawned we oughtn't to have yawned you oughtn't to have yawned they oughtn't to have yawned	I oughtn't to have been yawning you oughtn't to have been yawning he oughtn't to have been yawning we oughtn't to have been yawning you oughtn't to have been yawning they oughtn't to have been yawning

Interrogative form

Simple form	V-ing form
ought to I yawn? ought to you yawn? ought to he yawn? ought to we yawn? ought to you yawn? ought to they yawn?	ought to I be yawning? ought to you be yawning? ought to he be yawning? ought to we be yawning? ought to you be yawning? ought to they be yawning?
Perfect	V-ing perfect
ought to I have yawned? ought to you have yawned? ought to he have yawned? ought to we have yawned? ought to you have yawned? ought to they have yawned?	ought to I have been yawning? ought to you have been yawning? ought to he have been yawning? ought to we have been yawning? ought to you have been yawning? ought to they have been yawning?

Interro-negative form

Simple form	V-ing form
oughtn't I to yawn? oughtn't you to yawn? oughtn't he to yawn? oughtn't we to yawn? oughtn't you to yawn? oughtn't they to yawn?	oughtn't I to be yawning? oughtn't you to be yawning? oughtn't he to be yawning? oughtn't we to be yawning? oughtn't you to be yawning? oughtn't they to be yawning?
Perfect	V-ing perfect
oughtn't I to have yawned? oughtn't you to have yawned? oughtn't he to have yawned? oughtn't we to have yawned? oughtn't you to have yawned? oughtn't they to have yawned?	oughtn't I to have been yawning? oughtn't you to have been yawning? oughtn't he to have been yawning? oughtn't we to have been yawning? oughtn't you to have been yawning? oughtn't they to have been yawning?