I'd be underlying you'd be underlying she'd be underlying we'd be underlying you'd be underlying they'd be underlying
Perfect
I should've underlain you should've underlain she should've underlain we should've underlain you should've underlain they should've underlain
V-ing perfect
I should've been underlying you should've been underlying she should've been underlying we should've been underlying you should've been underlying they should've been underlying
Negation
Simple form
I shouldn't underlie you shouldn't underlie she shouldn't underlie we shouldn't underlie you shouldn't underlie they shouldn't underlie
V-ing form
I shouldn't be underlying you shouldn't be underlying she shouldn't be underlying we shouldn't be underlying you shouldn't be underlying they shouldn't be underlying
Perfect
I shouldn't have underlain you shouldn't have underlain she shouldn't have underlain we shouldn't have underlain you shouldn't have underlain they shouldn't have underlain
V-ing perfect
I shouldn't have been underlying you shouldn't have been underlying she shouldn't have been underlying we shouldn't have been underlying you shouldn't have been underlying they shouldn't have been underlying
Interrogative form
Simple form
should I underlie? should you underlie? should she underlie? should we underlie? should you underlie? should they underlie?
V-ing form
should I be underlying? should you be underlying? should she be underlying? should we be underlying? should you be underlying? should they be underlying?
Perfect
should I have underlain? should you have underlain? should she have underlain? should we have underlain? should you have underlain? should they have underlain?
V-ing perfect
should I have been underlying? should you have been underlying? should she have been underlying? should we have been underlying? should you have been underlying? should they have been underlying?
Interro-negative form
Simple form
shouldn't I underlie? shouldn't you underlie? shouldn't she underlie? shouldn't we underlie? shouldn't you underlie? shouldn't they underlie?
V-ing form
shouldn't I be underlying? shouldn't you be underlying? shouldn't she be underlying? shouldn't we be underlying? shouldn't you be underlying? shouldn't they be underlying?
Perfect
shouldn't I have underlain? shouldn't you have underlain? shouldn't she have underlain? shouldn't we have underlain? shouldn't you have underlain? shouldn't they have underlain?
V-ing perfect
shouldn't I have been underlying? shouldn't you have been underlying? shouldn't she have been underlying? shouldn't we have been underlying? shouldn't you have been underlying? shouldn't they have been underlying?