English verb conjugation
SHOULD UNDER

Regular verb: under - undered - undered

Affirmation

Simple form	V-ing form
I'd under you'd under he'd under we'd under you'd under they'd under	I'd be undering you'd be undering he'd be undering we'd be undering you'd be undering they'd be undering
Perfect	V-ing perfect
I should've undered you should've undered he should've undered we should've undered you should've undered they should've undered	I should've been undering you should've been undering he should've been undering we should've been undering you should've been undering they should've been undering

Negation

Simple form	V-ing form
I shouldn't under you shouldn't under he shouldn't under we shouldn't under you shouldn't under they shouldn't under	I shouldn't be undering you shouldn't be undering he shouldn't be undering we shouldn't be undering you shouldn't be undering they shouldn't be undering
Perfect	V-ing perfect
I shouldn't have undered you shouldn't have undered he shouldn't have undered we shouldn't have undered you shouldn't have undered they shouldn't have undered	I shouldn't have been undering you shouldn't have been undering he shouldn't have been undering we shouldn't have been undering you shouldn't have been undering they shouldn't have been undering

Interrogative form

Simple form	V-ing form
should I under? should you under? should he under? should we under? should you under? should they under?	should I be undering? should you be undering? should he be undering? should we be undering? should you be undering? should they be undering?
Perfect	V-ing perfect
should I have undered? should you have undered? should he have undered? should we have undered? should you have undered? should they have undered?	should I have been undering? should you have been undering? should he have been undering? should we have been undering? should you have been undering? should they have been undering?

Interro-negative form

Simple form	V-ing form
shouldn't I under? shouldn't you under? shouldn't he under? shouldn't we under? shouldn't you under? shouldn't they under?	shouldn't I be undering? shouldn't you be undering? shouldn't he be undering? shouldn't we be undering? shouldn't you be undering? shouldn't they be undering?
Perfect	V-ing perfect
shouldn't I have undered? shouldn't you have undered? shouldn't he have undered? shouldn't we have undered? shouldn't you have undered? shouldn't they have undered?	shouldn't I have been undering? shouldn't you have been undering? shouldn't he have been undering? shouldn't we have been undering? shouldn't you have been undering? shouldn't they have been undering?