English verb conjugation
OUGHT TO SCRUB

Regular verb: scrub - scrubbed - scrubbed

Affirmation

Simple form	V-ing form
I ought to scrub you ought to scrub he ought to scrub we ought to scrub you ought to scrub they ought to scrub	I ought to be scrubbing you ought to be scrubbing he ought to be scrubbing we ought to be scrubbing you ought to be scrubbing they ought to be scrubbing
Perfect	V-ing perfect
I ought to have scrubbed you ought to have scrubbed he ought to have scrubbed we ought to have scrubbed you ought to have scrubbed they ought to have scrubbed	I ought to have been scrubbing you ought to have been scrubbing he ought to have been scrubbing we ought to have been scrubbing you ought to have been scrubbing they ought to have been scrubbing

Negation

Simple form	V-ing form
I oughtn't to scrub you oughtn't to scrub he oughtn't to scrub we oughtn't to scrub you oughtn't to scrub they oughtn't to scrub	I oughtn't to be scrubbing you oughtn't to be scrubbing he oughtn't to be scrubbing we oughtn't to be scrubbing you oughtn't to be scrubbing they oughtn't to be scrubbing
Perfect	V-ing perfect
I oughtn't to have scrubbed you oughtn't to have scrubbed he oughtn't to have scrubbed we oughtn't to have scrubbed you oughtn't to have scrubbed they oughtn't to have scrubbed	I oughtn't to have been scrubbing you oughtn't to have been scrubbing he oughtn't to have been scrubbing we oughtn't to have been scrubbing you oughtn't to have been scrubbing they oughtn't to have been scrubbing

Interrogative form

Simple form	V-ing form
ought to I scrub? ought to you scrub? ought to he scrub? ought to we scrub? ought to you scrub? ought to they scrub?	ought to I be scrubbing? ought to you be scrubbing? ought to he be scrubbing? ought to we be scrubbing? ought to you be scrubbing? ought to they be scrubbing?
Perfect	V-ing perfect
ought to I have scrubbed? ought to you have scrubbed? ought to he have scrubbed? ought to we have scrubbed? ought to you have scrubbed? ought to they have scrubbed?	ought to I have been scrubbing? ought to you have been scrubbing? ought to he have been scrubbing? ought to we have been scrubbing? ought to you have been scrubbing? ought to they have been scrubbing?

Interro-negative form

Simple form	V-ing form
oughtn't I to scrub? oughtn't you to scrub? oughtn't he to scrub? oughtn't we to scrub? oughtn't you to scrub? oughtn't they to scrub?	oughtn't I to be scrubbing? oughtn't you to be scrubbing? oughtn't he to be scrubbing? oughtn't we to be scrubbing? oughtn't you to be scrubbing? oughtn't they to be scrubbing?
Perfect	V-ing perfect
oughtn't I to have scrubbed? oughtn't you to have scrubbed? oughtn't he to have scrubbed? oughtn't we to have scrubbed? oughtn't you to have scrubbed? oughtn't they to have scrubbed?	oughtn't I to have been scrubbing? oughtn't you to have been scrubbing? oughtn't he to have been scrubbing? oughtn't we to have been scrubbing? oughtn't you to have been scrubbing? oughtn't they to have been scrubbing?