should perk
Regular verb: perk - perked- perked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd perk
you'd perk
she'd perk
we'd perk
you'd perk
they'd perk 	I'd be perking
you'd be perking
she'd be perking
we'd be perking
you'd be perking
they'd be perking	I should've perked
you should've perked
she should've perked
we should've perked
you should've perked
they should've perked	I should've been perking
you should've been perking
she should've been perking
we should've been perking
you should've been perking
they should've been perking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't perk
you shouldn't perk
she shouldn't perk
we shouldn't perk
you shouldn't perk
they shouldn't perk 	I shouldn't be perking
you shouldn't be perking
she shouldn't be perking
we shouldn't be perking
you shouldn't be perking
they shouldn't be perking	I shouldn't have perked
you shouldn't have perked
she shouldn't have perked
we shouldn't have perked
you shouldn't have perked
they shouldn't have perked	I shouldn't have been perking
you shouldn't have been perking
she shouldn't have been perking
we shouldn't have been perking
you shouldn't have been perking
they shouldn't have been perking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I perk?
should you perk?
should she perk?
should we perk?
should you perk?
should they perk? 	should I be perking?
should you be perking?
should she be perking?
should we be perking?
should you be perking?
should they be perking? 	should I have perked?
should you have perked?
should she have perked?
should we have perked?
should you have perked?
should they have perked? 	should I have been perking?
should you have been perking?
should she have been perking?
should we have been perking?
should you have been perking?
should they have been perking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I perk?
shouldn't you perk?
shouldn't she perk?
shouldn't we perk?
shouldn't you perk?
shouldn't they perk? 	shouldn't I be perking?
shouldn't you be perking?
shouldn't she be perking?
shouldn't we be perking?
shouldn't you be perking?
shouldn't they be perking? 	shouldn't I have perked?
shouldn't you have perked?
shouldn't she have perked?
shouldn't we have perked?
shouldn't you have perked?
shouldn't they have perked? 	shouldn't I have been perking?
shouldn't you have been perking?
shouldn't she have been perking?
shouldn't we have been perking?
shouldn't you have been perking?
shouldn't they have been perking?