English verb conjugation
SHOULD TITTER

Regular verb: titter - tittered - tittered

Affirmation

Simple form	V-ing form
I'd titter you'd titter he'd titter we'd titter you'd titter they'd titter	I'd be tittering you'd be tittering he'd be tittering we'd be tittering you'd be tittering they'd be tittering
Perfect	V-ing perfect
I should've tittered you should've tittered he should've tittered we should've tittered you should've tittered they should've tittered	I should've been tittering you should've been tittering he should've been tittering we should've been tittering you should've been tittering they should've been tittering

Negation

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

Interrogative form

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

Interro-negative form

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