I'd be unmasking you'd be unmasking he'd be unmasking we'd be unmasking you'd be unmasking they'd be unmasking
Perfect
I should've unmasked you should've unmasked he should've unmasked we should've unmasked you should've unmasked they should've unmasked
V-ing perfect
I should've been unmasking you should've been unmasking he should've been unmasking we should've been unmasking you should've been unmasking they should've been unmasking
Negation
Simple form
I shouldn't unmask you shouldn't unmask he shouldn't unmask we shouldn't unmask you shouldn't unmask they shouldn't unmask
V-ing form
I shouldn't be unmasking you shouldn't be unmasking he shouldn't be unmasking we shouldn't be unmasking you shouldn't be unmasking they shouldn't be unmasking
Perfect
I shouldn't have unmasked you shouldn't have unmasked he shouldn't have unmasked we shouldn't have unmasked you shouldn't have unmasked they shouldn't have unmasked
V-ing perfect
I shouldn't have been unmasking you shouldn't have been unmasking he 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
should I unmask? should you unmask? should he unmask? should we unmask? should you unmask? should they unmask?
V-ing form
should I be unmasking? should you be unmasking? should he be unmasking? should we be unmasking? should you be unmasking? should they be unmasking?
Perfect
should I have unmasked? should you have unmasked? should he have unmasked? should we have unmasked? should you have unmasked? should they have unmasked?
V-ing perfect
should I have been unmasking? should you have been unmasking? should he have been unmasking? should we have been unmasking? should you have been unmasking? should they have been unmasking?
Interro-negative form
Simple form
shouldn't I unmask? shouldn't you unmask? shouldn't he unmask? shouldn't we unmask? shouldn't you unmask? shouldn't they unmask?
V-ing form
shouldn't I be unmasking? shouldn't you be unmasking? shouldn't he be unmasking? shouldn't we be unmasking? shouldn't you be unmasking? shouldn't they be unmasking?
Perfect
shouldn't I have unmasked? shouldn't you have unmasked? shouldn't he have unmasked? shouldn't we have unmasked? shouldn't you have unmasked? shouldn't they have unmasked?
V-ing perfect
shouldn't I have been unmasking? shouldn't you have been unmasking? shouldn't he have been unmasking? shouldn't we have been unmasking? shouldn't you have been unmasking? shouldn't they have been unmasking?