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