I'd be foundering you'd be foundering he'd be foundering we'd be foundering you'd be foundering they'd be foundering
Perfect
I should've foundered you should've foundered he should've foundered we should've foundered you should've foundered they should've foundered
V-ing perfect
I should've been foundering you should've been foundering he should've been foundering we should've been foundering you should've been foundering they should've been foundering
Negation
Simple form
I shouldn't founder you shouldn't founder he shouldn't founder we shouldn't founder you shouldn't founder they shouldn't founder
V-ing form
I shouldn't be foundering you shouldn't be foundering he shouldn't be foundering we shouldn't be foundering you shouldn't be foundering they shouldn't be foundering
Perfect
I shouldn't have foundered you shouldn't have foundered he shouldn't have foundered we shouldn't have foundered you shouldn't have foundered they shouldn't have foundered
V-ing perfect
I shouldn't have been foundering you shouldn't have been foundering he shouldn't have been foundering we shouldn't have been foundering you shouldn't have been foundering they shouldn't have been foundering
Interrogative form
Simple form
should I founder? should you founder? should he founder? should we founder? should you founder? should they founder?
V-ing form
should I be foundering? should you be foundering? should he be foundering? should we be foundering? should you be foundering? should they be foundering?
Perfect
should I have foundered? should you have foundered? should he have foundered? should we have foundered? should you have foundered? should they have foundered?
V-ing perfect
should I have been foundering? should you have been foundering? should he have been foundering? should we have been foundering? should you have been foundering? should they have been foundering?
Interro-negative form
Simple form
shouldn't I founder? shouldn't you founder? shouldn't he founder? shouldn't we founder? shouldn't you founder? shouldn't they founder?
V-ing form
shouldn't I be foundering? shouldn't you be foundering? shouldn't he be foundering? shouldn't we be foundering? shouldn't you be foundering? shouldn't they be foundering?
Perfect
shouldn't I have foundered? shouldn't you have foundered? shouldn't he have foundered? shouldn't we have foundered? shouldn't you have foundered? shouldn't they have foundered?
V-ing perfect
shouldn't I have been foundering? shouldn't you have been foundering? shouldn't he have been foundering? shouldn't we have been foundering? shouldn't you have been foundering? shouldn't they have been foundering?