English verb conjugation
SHOULD LAG

Regular verb: lag - lagged - lagged

Affirmation

Simple form	V-ing form
I'd lag you'd lag he'd lag we'd lag you'd lag they'd lag	I'd be lagging you'd be lagging he'd be lagging we'd be lagging you'd be lagging they'd be lagging
Perfect	V-ing perfect
I should've lagged you should've lagged he should've lagged we should've lagged you should've lagged they should've lagged	I should've been lagging you should've been lagging he should've been lagging we should've been lagging you should've been lagging they should've been lagging

Negation

Simple form	V-ing form
I shouldn't lag you shouldn't lag he shouldn't lag we shouldn't lag you shouldn't lag they shouldn't lag	I shouldn't be lagging you shouldn't be lagging he shouldn't be lagging we shouldn't be lagging you shouldn't be lagging they shouldn't be lagging
Perfect	V-ing perfect
I shouldn't have lagged you shouldn't have lagged he shouldn't have lagged we shouldn't have lagged you shouldn't have lagged they shouldn't have lagged	I shouldn't have been lagging you shouldn't have been lagging he shouldn't have been lagging we shouldn't have been lagging you shouldn't have been lagging they shouldn't have been lagging

Interrogative form

Simple form	V-ing form
should I lag? should you lag? should he lag? should we lag? should you lag? should they lag?	should I be lagging? should you be lagging? should he be lagging? should we be lagging? should you be lagging? should they be lagging?
Perfect	V-ing perfect
should I have lagged? should you have lagged? should he have lagged? should we have lagged? should you have lagged? should they have lagged?	should I have been lagging? should you have been lagging? should he have been lagging? should we have been lagging? should you have been lagging? should they have been lagging?

Interro-negative form

Simple form	V-ing form
shouldn't I lag? shouldn't you lag? shouldn't he lag? shouldn't we lag? shouldn't you lag? shouldn't they lag?	shouldn't I be lagging? shouldn't you be lagging? shouldn't he be lagging? shouldn't we be lagging? shouldn't you be lagging? shouldn't they be lagging?
Perfect	V-ing perfect
shouldn't I have lagged? shouldn't you have lagged? shouldn't he have lagged? shouldn't we have lagged? shouldn't you have lagged? shouldn't they have lagged?	shouldn't I have been lagging? shouldn't you have been lagging? shouldn't he have been lagging? shouldn't we have been lagging? shouldn't you have been lagging? shouldn't they have been lagging?