English verb conjugation
OUGHT TO UNDERTAKE

Irregular verb: undertake - undertook - undertaken

Affirmation

Simple form	V-ing form
I ought to undertake you ought to undertake he ought to undertake we ought to undertake you ought to undertake they ought to undertake	I ought to be undertaking you ought to be undertaking he ought to be undertaking we ought to be undertaking you ought to be undertaking they ought to be undertaking
Perfect	V-ing perfect
I ought to have undertaken you ought to have undertaken he ought to have undertaken we ought to have undertaken you ought to have undertaken they ought to have undertaken	I ought to have been undertaking you ought to have been undertaking he ought to have been undertaking we ought to have been undertaking you ought to have been undertaking they ought to have been undertaking

Negation

Simple form	V-ing form
I oughtn't to undertake you oughtn't to undertake he oughtn't to undertake we oughtn't to undertake you oughtn't to undertake they oughtn't to undertake	I oughtn't to be undertaking you oughtn't to be undertaking he oughtn't to be undertaking we oughtn't to be undertaking you oughtn't to be undertaking they oughtn't to be undertaking
Perfect	V-ing perfect
I oughtn't to have undertaken you oughtn't to have undertaken he oughtn't to have undertaken we oughtn't to have undertaken you oughtn't to have undertaken they oughtn't to have undertaken	I oughtn't to have been undertaking you oughtn't to have been undertaking he oughtn't to have been undertaking we oughtn't to have been undertaking you oughtn't to have been undertaking they oughtn't to have been undertaking

Interrogative form

Simple form	V-ing form
ought to I undertake? ought to you undertake? ought to he undertake? ought to we undertake? ought to you undertake? ought to they undertake?	ought to I be undertaking? ought to you be undertaking? ought to he be undertaking? ought to we be undertaking? ought to you be undertaking? ought to they be undertaking?
Perfect	V-ing perfect
ought to I have undertaken? ought to you have undertaken? ought to he have undertaken? ought to we have undertaken? ought to you have undertaken? ought to they have undertaken?	ought to I have been undertaking? ought to you have been undertaking? ought to he have been undertaking? ought to we have been undertaking? ought to you have been undertaking? ought to they have been undertaking?

Interro-negative form

Simple form	V-ing form
oughtn't I to undertake? oughtn't you to undertake? oughtn't he to undertake? oughtn't we to undertake? oughtn't you to undertake? oughtn't they to undertake?	oughtn't I to be undertaking? oughtn't you to be undertaking? oughtn't he to be undertaking? oughtn't we to be undertaking? oughtn't you to be undertaking? oughtn't they to be undertaking?
Perfect	V-ing perfect
oughtn't I to have undertaken? oughtn't you to have undertaken? oughtn't he to have undertaken? oughtn't we to have undertaken? oughtn't you to have undertaken? oughtn't they to have undertaken?	oughtn't I to have been undertaking? oughtn't you to have been undertaking? oughtn't he to have been undertaking? oughtn't we to have been undertaking? oughtn't you to have been undertaking? oughtn't they to have been undertaking?