English verb conjugation
OUGHT TO GRUMP

Regular verb: grump - grumped - grumped

Affirmation

Simple form	V-ing form
I ought to grump you ought to grump he ought to grump we ought to grump you ought to grump they ought to grump	I ought to be grumping you ought to be grumping he ought to be grumping we ought to be grumping you ought to be grumping they ought to be grumping
Perfect	V-ing perfect
I ought to have grumped you ought to have grumped he ought to have grumped we ought to have grumped you ought to have grumped they ought to have grumped	I ought to have been grumping you ought to have been grumping he ought to have been grumping we ought to have been grumping you ought to have been grumping they ought to have been grumping

Negation

Simple form	V-ing form
I oughtn't to grump you oughtn't to grump he oughtn't to grump we oughtn't to grump you oughtn't to grump they oughtn't to grump	I oughtn't to be grumping you oughtn't to be grumping he oughtn't to be grumping we oughtn't to be grumping you oughtn't to be grumping they oughtn't to be grumping
Perfect	V-ing perfect
I oughtn't to have grumped you oughtn't to have grumped he oughtn't to have grumped we oughtn't to have grumped you oughtn't to have grumped they oughtn't to have grumped	I oughtn't to have been grumping you oughtn't to have been grumping he oughtn't to have been grumping we oughtn't to have been grumping you oughtn't to have been grumping they oughtn't to have been grumping

Interrogative form

Simple form	V-ing form
ought to I grump? ought to you grump? ought to he grump? ought to we grump? ought to you grump? ought to they grump?	ought to I be grumping? ought to you be grumping? ought to he be grumping? ought to we be grumping? ought to you be grumping? ought to they be grumping?
Perfect	V-ing perfect
ought to I have grumped? ought to you have grumped? ought to he have grumped? ought to we have grumped? ought to you have grumped? ought to they have grumped?	ought to I have been grumping? ought to you have been grumping? ought to he have been grumping? ought to we have been grumping? ought to you have been grumping? ought to they have been grumping?

Interro-negative form

Simple form	V-ing form
oughtn't I to grump? oughtn't you to grump? oughtn't he to grump? oughtn't we to grump? oughtn't you to grump? oughtn't they to grump?	oughtn't I to be grumping? oughtn't you to be grumping? oughtn't he to be grumping? oughtn't we to be grumping? oughtn't you to be grumping? oughtn't they to be grumping?
Perfect	V-ing perfect
oughtn't I to have grumped? oughtn't you to have grumped? oughtn't he to have grumped? oughtn't we to have grumped? oughtn't you to have grumped? oughtn't they to have grumped?	oughtn't I to have been grumping? oughtn't you to have been grumping? oughtn't he to have been grumping? oughtn't we to have been grumping? oughtn't you to have been grumping? oughtn't they to have been grumping?