should unmask
Regular verb: unmask - unmasked- unmasked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd unmask
you'd unmask
she'd unmask
we'd unmask
you'd unmask
they'd unmask 	I'd be unmasking
you'd be unmasking
she'd be unmasking
we'd be unmasking
you'd be unmasking
they'd be unmasking	I should've unmasked
you should've unmasked
she should've unmasked
we should've unmasked
you should've unmasked
they should've unmasked	I should've been unmasking
you should've been unmasking
she should've been unmasking
we should've been unmasking
you should've been unmasking
they should've been unmasking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't unmask
you shouldn't unmask
she shouldn't unmask
we shouldn't unmask
you shouldn't unmask
they shouldn't unmask 	I shouldn't be unmasking
you shouldn't be unmasking
she shouldn't be unmasking
we shouldn't be unmasking
you shouldn't be unmasking
they shouldn't be unmasking	I shouldn't have unmasked
you shouldn't have unmasked
she shouldn't have unmasked
we shouldn't have unmasked
you shouldn't have unmasked
they shouldn't have unmasked	I shouldn't have been unmasking
you shouldn't have been unmasking
she shouldn't have been unmasking
we shouldn't have been unmasking
you shouldn't have been unmasking
they shouldn't have been unmasking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I unmask?
should you unmask?
should she unmask?
should we unmask?
should you unmask?
should they unmask? 	should I be unmasking?
should you be unmasking?
should she be unmasking?
should we be unmasking?
should you be unmasking?
should they be unmasking? 	should I have unmasked?
should you have unmasked?
should she have unmasked?
should we have unmasked?
should you have unmasked?
should they have unmasked? 	should I have been unmasking?
should you have been unmasking?
should she have been unmasking?
should we have been unmasking?
should you have been unmasking?
should they have been unmasking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I unmask?
shouldn't you unmask?
shouldn't she unmask?
shouldn't we unmask?
shouldn't you unmask?
shouldn't they unmask? 	shouldn't I be unmasking?
shouldn't you be unmasking?
shouldn't she be unmasking?
shouldn't we be unmasking?
shouldn't you be unmasking?
shouldn't they be unmasking? 	shouldn't I have unmasked?
shouldn't you have unmasked?
shouldn't she have unmasked?
shouldn't we have unmasked?
shouldn't you have unmasked?
shouldn't they have unmasked? 	shouldn't I have been unmasking?
shouldn't you have been unmasking?
shouldn't she have been unmasking?
shouldn't we have been unmasking?
shouldn't you have been unmasking?
shouldn't they have been unmasking?