English verb conjugation
OUGHT TO UNDERMINE

Regular verb: undermine - undermined - undermined

Affirmation

Simple form	V-ing form
I ought to undermine you ought to undermine he ought to undermine we ought to undermine you ought to undermine they ought to undermine	I ought to be undermining you ought to be undermining he ought to be undermining we ought to be undermining you ought to be undermining they ought to be undermining
Perfect	V-ing perfect
I ought to have undermined you ought to have undermined he ought to have undermined we ought to have undermined you ought to have undermined they ought to have undermined	I ought to have been undermining you ought to have been undermining he ought to have been undermining we ought to have been undermining you ought to have been undermining they ought to have been undermining

Negation

Simple form	V-ing form
I oughtn't to undermine you oughtn't to undermine he oughtn't to undermine we oughtn't to undermine you oughtn't to undermine they oughtn't to undermine	I oughtn't to be undermining you oughtn't to be undermining he oughtn't to be undermining we oughtn't to be undermining you oughtn't to be undermining they oughtn't to be undermining
Perfect	V-ing perfect
I oughtn't to have undermined you oughtn't to have undermined he oughtn't to have undermined we oughtn't to have undermined you oughtn't to have undermined they oughtn't to have undermined	I oughtn't to have been undermining you oughtn't to have been undermining he oughtn't to have been undermining we oughtn't to have been undermining you oughtn't to have been undermining they oughtn't to have been undermining

Interrogative form

Simple form	V-ing form
ought to I undermine? ought to you undermine? ought to he undermine? ought to we undermine? ought to you undermine? ought to they undermine?	ought to I be undermining? ought to you be undermining? ought to he be undermining? ought to we be undermining? ought to you be undermining? ought to they be undermining?
Perfect	V-ing perfect
ought to I have undermined? ought to you have undermined? ought to he have undermined? ought to we have undermined? ought to you have undermined? ought to they have undermined?	ought to I have been undermining? ought to you have been undermining? ought to he have been undermining? ought to we have been undermining? ought to you have been undermining? ought to they have been undermining?

Interro-negative form

Simple form	V-ing form
oughtn't I to undermine? oughtn't you to undermine? oughtn't he to undermine? oughtn't we to undermine? oughtn't you to undermine? oughtn't they to undermine?	oughtn't I to be undermining? oughtn't you to be undermining? oughtn't he to be undermining? oughtn't we to be undermining? oughtn't you to be undermining? oughtn't they to be undermining?
Perfect	V-ing perfect
oughtn't I to have undermined? oughtn't you to have undermined? oughtn't he to have undermined? oughtn't we to have undermined? oughtn't you to have undermined? oughtn't they to have undermined?	oughtn't I to have been undermining? oughtn't you to have been undermining? oughtn't he to have been undermining? oughtn't we to have been undermining? oughtn't you to have been undermining? oughtn't they to have been undermining?