should comment
Regular verb: comment - commented- commented

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd comment
you'd comment
she'd comment
we'd comment
you'd comment
they'd comment 	I'd be commenting
you'd be commenting
she'd be commenting
we'd be commenting
you'd be commenting
they'd be commenting	I should've commented
you should've commented
she should've commented
we should've commented
you should've commented
they should've commented	I should've been commenting
you should've been commenting
she should've been commenting
we should've been commenting
you should've been commenting
they should've been commenting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't comment
you shouldn't comment
she shouldn't comment
we shouldn't comment
you shouldn't comment
they shouldn't comment 	I shouldn't be commenting
you shouldn't be commenting
she shouldn't be commenting
we shouldn't be commenting
you shouldn't be commenting
they shouldn't be commenting	I shouldn't have commented
you shouldn't have commented
she shouldn't have commented
we shouldn't have commented
you shouldn't have commented
they shouldn't have commented	I shouldn't have been commenting
you shouldn't have been commenting
she shouldn't have been commenting
we shouldn't have been commenting
you shouldn't have been commenting
they shouldn't have been commenting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I comment?
should you comment?
should she comment?
should we comment?
should you comment?
should they comment? 	should I be commenting?
should you be commenting?
should she be commenting?
should we be commenting?
should you be commenting?
should they be commenting? 	should I have commented?
should you have commented?
should she have commented?
should we have commented?
should you have commented?
should they have commented? 	should I have been commenting?
should you have been commenting?
should she have been commenting?
should we have been commenting?
should you have been commenting?
should they have been commenting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I comment?
shouldn't you comment?
shouldn't she comment?
shouldn't we comment?
shouldn't you comment?
shouldn't they comment? 	shouldn't I be commenting?
shouldn't you be commenting?
shouldn't she be commenting?
shouldn't we be commenting?
shouldn't you be commenting?
shouldn't they be commenting? 	shouldn't I have commented?
shouldn't you have commented?
shouldn't she have commented?
shouldn't we have commented?
shouldn't you have commented?
shouldn't they have commented? 	shouldn't I have been commenting?
shouldn't you have been commenting?
shouldn't she have been commenting?
shouldn't we have been commenting?
shouldn't you have been commenting?
shouldn't they have been commenting?