English verb conjugation
SHOULD CONGRATULATE

Regular verb: congratulate - congratulated - congratulated

Affirmation

Simple form	V-ing form
I'd congratulate you'd congratulate he'd congratulate we'd congratulate you'd congratulate they'd congratulate	I'd be congratulating you'd be congratulating he'd be congratulating we'd be congratulating you'd be congratulating they'd be congratulating
Perfect	V-ing perfect
I should've congratulated you should've congratulated he should've congratulated we should've congratulated you should've congratulated they should've congratulated	I should've been congratulating you should've been congratulating he should've been congratulating we should've been congratulating you should've been congratulating they should've been congratulating

Negation

Simple form	V-ing form
I shouldn't congratulate you shouldn't congratulate he shouldn't congratulate we shouldn't congratulate you shouldn't congratulate they shouldn't congratulate	I shouldn't be congratulating you shouldn't be congratulating he shouldn't be congratulating we shouldn't be congratulating you shouldn't be congratulating they shouldn't be congratulating
Perfect	V-ing perfect
I shouldn't have congratulated you shouldn't have congratulated he shouldn't have congratulated we shouldn't have congratulated you shouldn't have congratulated they shouldn't have congratulated	I shouldn't have been congratulating you shouldn't have been congratulating he shouldn't have been congratulating we shouldn't have been congratulating you shouldn't have been congratulating they shouldn't have been congratulating

Interrogative form

Simple form	V-ing form
should I congratulate? should you congratulate? should he congratulate? should we congratulate? should you congratulate? should they congratulate?	should I be congratulating? should you be congratulating? should he be congratulating? should we be congratulating? should you be congratulating? should they be congratulating?
Perfect	V-ing perfect
should I have congratulated? should you have congratulated? should he have congratulated? should we have congratulated? should you have congratulated? should they have congratulated?	should I have been congratulating? should you have been congratulating? should he have been congratulating? should we have been congratulating? should you have been congratulating? should they have been congratulating?

Interro-negative form

Simple form	V-ing form
shouldn't I congratulate? shouldn't you congratulate? shouldn't he congratulate? shouldn't we congratulate? shouldn't you congratulate? shouldn't they congratulate?	shouldn't I be congratulating? shouldn't you be congratulating? shouldn't he be congratulating? shouldn't we be congratulating? shouldn't you be congratulating? shouldn't they be congratulating?
Perfect	V-ing perfect
shouldn't I have congratulated? shouldn't you have congratulated? shouldn't he have congratulated? shouldn't we have congratulated? shouldn't you have congratulated? shouldn't they have congratulated?	shouldn't I have been congratulating? shouldn't you have been congratulating? shouldn't he have been congratulating? shouldn't we have been congratulating? shouldn't you have been congratulating? shouldn't they have been congratulating?