English verb conjugation
OUGHT TO DAM

Regular verb: dam - dammed - dammed

Affirmation

Simple form	V-ing form
I ought to dam you ought to dam he ought to dam we ought to dam you ought to dam they ought to dam	I ought to be damming you ought to be damming he ought to be damming we ought to be damming you ought to be damming they ought to be damming
Perfect	V-ing perfect
I ought to have dammed you ought to have dammed he ought to have dammed we ought to have dammed you ought to have dammed they ought to have dammed	I ought to have been damming you ought to have been damming he ought to have been damming we ought to have been damming you ought to have been damming they ought to have been damming

Negation

Simple form	V-ing form
I oughtn't to dam you oughtn't to dam he oughtn't to dam we oughtn't to dam you oughtn't to dam they oughtn't to dam	I oughtn't to be damming you oughtn't to be damming he oughtn't to be damming we oughtn't to be damming you oughtn't to be damming they oughtn't to be damming
Perfect	V-ing perfect
I oughtn't to have dammed you oughtn't to have dammed he oughtn't to have dammed we oughtn't to have dammed you oughtn't to have dammed they oughtn't to have dammed	I oughtn't to have been damming you oughtn't to have been damming he oughtn't to have been damming we oughtn't to have been damming you oughtn't to have been damming they oughtn't to have been damming

Interrogative form

Simple form	V-ing form
ought to I dam? ought to you dam? ought to he dam? ought to we dam? ought to you dam? ought to they dam?	ought to I be damming? ought to you be damming? ought to he be damming? ought to we be damming? ought to you be damming? ought to they be damming?
Perfect	V-ing perfect
ought to I have dammed? ought to you have dammed? ought to he have dammed? ought to we have dammed? ought to you have dammed? ought to they have dammed?	ought to I have been damming? ought to you have been damming? ought to he have been damming? ought to we have been damming? ought to you have been damming? ought to they have been damming?

Interro-negative form

Simple form	V-ing form
oughtn't I to dam? oughtn't you to dam? oughtn't he to dam? oughtn't we to dam? oughtn't you to dam? oughtn't they to dam?	oughtn't I to be damming? oughtn't you to be damming? oughtn't he to be damming? oughtn't we to be damming? oughtn't you to be damming? oughtn't they to be damming?
Perfect	V-ing perfect
oughtn't I to have dammed? oughtn't you to have dammed? oughtn't he to have dammed? oughtn't we to have dammed? oughtn't you to have dammed? oughtn't they to have dammed?	oughtn't I to have been damming? oughtn't you to have been damming? oughtn't he to have been damming? oughtn't we to have been damming? oughtn't you to have been damming? oughtn't they to have been damming?