English verb conjugation
OUGHT TO SUBTRACT

Regular verb: subtract - subtracted - subtracted

Affirmation

Simple form	V-ing form
I ought to subtract you ought to subtract he ought to subtract we ought to subtract you ought to subtract they ought to subtract	I ought to be subtracting you ought to be subtracting he ought to be subtracting we ought to be subtracting you ought to be subtracting they ought to be subtracting
Perfect	V-ing perfect
I ought to have subtracted you ought to have subtracted he ought to have subtracted we ought to have subtracted you ought to have subtracted they ought to have subtracted	I ought to have been subtracting you ought to have been subtracting he ought to have been subtracting we ought to have been subtracting you ought to have been subtracting they ought to have been subtracting

Negation

Simple form	V-ing form
I oughtn't to subtract you oughtn't to subtract he oughtn't to subtract we oughtn't to subtract you oughtn't to subtract they oughtn't to subtract	I oughtn't to be subtracting you oughtn't to be subtracting he oughtn't to be subtracting we oughtn't to be subtracting you oughtn't to be subtracting they oughtn't to be subtracting
Perfect	V-ing perfect
I oughtn't to have subtracted you oughtn't to have subtracted he oughtn't to have subtracted we oughtn't to have subtracted you oughtn't to have subtracted they oughtn't to have subtracted	I oughtn't to have been subtracting you oughtn't to have been subtracting he oughtn't to have been subtracting we oughtn't to have been subtracting you oughtn't to have been subtracting they oughtn't to have been subtracting

Interrogative form

Simple form	V-ing form
ought to I subtract? ought to you subtract? ought to he subtract? ought to we subtract? ought to you subtract? ought to they subtract?	ought to I be subtracting? ought to you be subtracting? ought to he be subtracting? ought to we be subtracting? ought to you be subtracting? ought to they be subtracting?
Perfect	V-ing perfect
ought to I have subtracted? ought to you have subtracted? ought to he have subtracted? ought to we have subtracted? ought to you have subtracted? ought to they have subtracted?	ought to I have been subtracting? ought to you have been subtracting? ought to he have been subtracting? ought to we have been subtracting? ought to you have been subtracting? ought to they have been subtracting?

Interro-negative form

Simple form	V-ing form
oughtn't I to subtract? oughtn't you to subtract? oughtn't he to subtract? oughtn't we to subtract? oughtn't you to subtract? oughtn't they to subtract?	oughtn't I to be subtracting? oughtn't you to be subtracting? oughtn't he to be subtracting? oughtn't we to be subtracting? oughtn't you to be subtracting? oughtn't they to be subtracting?
Perfect	V-ing perfect
oughtn't I to have subtracted? oughtn't you to have subtracted? oughtn't he to have subtracted? oughtn't we to have subtracted? oughtn't you to have subtracted? oughtn't they to have subtracted?	oughtn't I to have been subtracting? oughtn't you to have been subtracting? oughtn't he to have been subtracting? oughtn't we to have been subtracting? oughtn't you to have been subtracting? oughtn't they to have been subtracting?