English verb conjugation
OUGHT TO TITTER

Regular verb: titter - tittered - tittered

Affirmation

Simple form	V-ing form
I ought to titter you ought to titter he ought to titter we ought to titter you ought to titter they ought to titter	I ought to be tittering you ought to be tittering he ought to be tittering we ought to be tittering you ought to be tittering they ought to be tittering
Perfect	V-ing perfect
I ought to have tittered you ought to have tittered he ought to have tittered we ought to have tittered you ought to have tittered they ought to have tittered	I ought to have been tittering you ought to have been tittering he ought to have been tittering we ought to have been tittering you ought to have been tittering they ought to have been tittering

Negation

Simple form	V-ing form
I oughtn't to titter you oughtn't to titter he oughtn't to titter we oughtn't to titter you oughtn't to titter they oughtn't to titter	I oughtn't to be tittering you oughtn't to be tittering he oughtn't to be tittering we oughtn't to be tittering you oughtn't to be tittering they oughtn't to be tittering
Perfect	V-ing perfect
I oughtn't to have tittered you oughtn't to have tittered he oughtn't to have tittered we oughtn't to have tittered you oughtn't to have tittered they oughtn't to have tittered	I oughtn't to have been tittering you oughtn't to have been tittering he oughtn't to have been tittering we oughtn't to have been tittering you oughtn't to have been tittering they oughtn't to have been tittering

Interrogative form

Simple form	V-ing form
ought to I titter? ought to you titter? ought to he titter? ought to we titter? ought to you titter? ought to they titter?	ought to I be tittering? ought to you be tittering? ought to he be tittering? ought to we be tittering? ought to you be tittering? ought to they be tittering?
Perfect	V-ing perfect
ought to I have tittered? ought to you have tittered? ought to he have tittered? ought to we have tittered? ought to you have tittered? ought to they have tittered?	ought to I have been tittering? ought to you have been tittering? ought to he have been tittering? ought to we have been tittering? ought to you have been tittering? ought to they have been tittering?

Interro-negative form

Simple form	V-ing form
oughtn't I to titter? oughtn't you to titter? oughtn't he to titter? oughtn't we to titter? oughtn't you to titter? oughtn't they to titter?	oughtn't I to be tittering? oughtn't you to be tittering? oughtn't he to be tittering? oughtn't we to be tittering? oughtn't you to be tittering? oughtn't they to be tittering?
Perfect	V-ing perfect
oughtn't I to have tittered? oughtn't you to have tittered? oughtn't he to have tittered? oughtn't we to have tittered? oughtn't you to have tittered? oughtn't they to have tittered?	oughtn't I to have been tittering? oughtn't you to have been tittering? oughtn't he to have been tittering? oughtn't we to have been tittering? oughtn't you to have been tittering? oughtn't they to have been tittering?