English verb conjugation
SHOULD GRATULATE

Regular verb: gratulate - gratulated - gratulated

Affirmation

Simple form	V-ing form
I'd gratulate you'd gratulate he'd gratulate we'd gratulate you'd gratulate they'd gratulate	I'd be gratulating you'd be gratulating he'd be gratulating we'd be gratulating you'd be gratulating they'd be gratulating
Perfect	V-ing perfect
I should've gratulated you should've gratulated he should've gratulated we should've gratulated you should've gratulated they should've gratulated	I should've been gratulating you should've been gratulating he should've been gratulating we should've been gratulating you should've been gratulating they should've been gratulating

Negation

Simple form	V-ing form
I shouldn't gratulate you shouldn't gratulate he shouldn't gratulate we shouldn't gratulate you shouldn't gratulate they shouldn't gratulate	I shouldn't be gratulating you shouldn't be gratulating he shouldn't be gratulating we shouldn't be gratulating you shouldn't be gratulating they shouldn't be gratulating
Perfect	V-ing perfect
I shouldn't have gratulated you shouldn't have gratulated he shouldn't have gratulated we shouldn't have gratulated you shouldn't have gratulated they shouldn't have gratulated	I shouldn't have been gratulating you shouldn't have been gratulating he shouldn't have been gratulating we shouldn't have been gratulating you shouldn't have been gratulating they shouldn't have been gratulating

Interrogative form

Simple form	V-ing form
should I gratulate? should you gratulate? should he gratulate? should we gratulate? should you gratulate? should they gratulate?	should I be gratulating? should you be gratulating? should he be gratulating? should we be gratulating? should you be gratulating? should they be gratulating?
Perfect	V-ing perfect
should I have gratulated? should you have gratulated? should he have gratulated? should we have gratulated? should you have gratulated? should they have gratulated?	should I have been gratulating? should you have been gratulating? should he have been gratulating? should we have been gratulating? should you have been gratulating? should they have been gratulating?

Interro-negative form

Simple form	V-ing form
shouldn't I gratulate? shouldn't you gratulate? shouldn't he gratulate? shouldn't we gratulate? shouldn't you gratulate? shouldn't they gratulate?	shouldn't I be gratulating? shouldn't you be gratulating? shouldn't he be gratulating? shouldn't we be gratulating? shouldn't you be gratulating? shouldn't they be gratulating?
Perfect	V-ing perfect
shouldn't I have gratulated? shouldn't you have gratulated? shouldn't he have gratulated? shouldn't we have gratulated? shouldn't you have gratulated? shouldn't they have gratulated?	shouldn't I have been gratulating? shouldn't you have been gratulating? shouldn't he have been gratulating? shouldn't we have been gratulating? shouldn't you have been gratulating? shouldn't they have been gratulating?