English verb conjugation
OUGHT TO SCREW

Regular verb: screw - screwed - screwed

Affirmation

Simple form	V-ing form
I ought to screw you ought to screw he ought to screw we ought to screw you ought to screw they ought to screw	I ought to be screwing you ought to be screwing he ought to be screwing we ought to be screwing you ought to be screwing they ought to be screwing
Perfect	V-ing perfect
I ought to have screwed you ought to have screwed he ought to have screwed we ought to have screwed you ought to have screwed they ought to have screwed	I ought to have been screwing you ought to have been screwing he ought to have been screwing we ought to have been screwing you ought to have been screwing they ought to have been screwing

Negation

Simple form	V-ing form
I oughtn't to screw you oughtn't to screw he oughtn't to screw we oughtn't to screw you oughtn't to screw they oughtn't to screw	I oughtn't to be screwing you oughtn't to be screwing he oughtn't to be screwing we oughtn't to be screwing you oughtn't to be screwing they oughtn't to be screwing
Perfect	V-ing perfect
I oughtn't to have screwed you oughtn't to have screwed he oughtn't to have screwed we oughtn't to have screwed you oughtn't to have screwed they oughtn't to have screwed	I oughtn't to have been screwing you oughtn't to have been screwing he oughtn't to have been screwing we oughtn't to have been screwing you oughtn't to have been screwing they oughtn't to have been screwing

Interrogative form

Simple form	V-ing form
ought to I screw? ought to you screw? ought to he screw? ought to we screw? ought to you screw? ought to they screw?	ought to I be screwing? ought to you be screwing? ought to he be screwing? ought to we be screwing? ought to you be screwing? ought to they be screwing?
Perfect	V-ing perfect
ought to I have screwed? ought to you have screwed? ought to he have screwed? ought to we have screwed? ought to you have screwed? ought to they have screwed?	ought to I have been screwing? ought to you have been screwing? ought to he have been screwing? ought to we have been screwing? ought to you have been screwing? ought to they have been screwing?

Interro-negative form

Simple form	V-ing form
oughtn't I to screw? oughtn't you to screw? oughtn't he to screw? oughtn't we to screw? oughtn't you to screw? oughtn't they to screw?	oughtn't I to be screwing? oughtn't you to be screwing? oughtn't he to be screwing? oughtn't we to be screwing? oughtn't you to be screwing? oughtn't they to be screwing?
Perfect	V-ing perfect
oughtn't I to have screwed? oughtn't you to have screwed? oughtn't he to have screwed? oughtn't we to have screwed? oughtn't you to have screwed? oughtn't they to have screwed?	oughtn't I to have been screwing? oughtn't you to have been screwing? oughtn't he to have been screwing? oughtn't we to have been screwing? oughtn't you to have been screwing? oughtn't they to have been screwing?