English verb conjugation
SHOULD PONDER

Regular verb: ponder - pondered - pondered

Affirmation

Simple form	V-ing form
I'd ponder you'd ponder he'd ponder we'd ponder you'd ponder they'd ponder	I'd be pondering you'd be pondering he'd be pondering we'd be pondering you'd be pondering they'd be pondering
Perfect	V-ing perfect
I should've pondered you should've pondered he should've pondered we should've pondered you should've pondered they should've pondered	I should've been pondering you should've been pondering he should've been pondering we should've been pondering you should've been pondering they should've been pondering

Negation

Simple form	V-ing form
I shouldn't ponder you shouldn't ponder he shouldn't ponder we shouldn't ponder you shouldn't ponder they shouldn't ponder	I shouldn't be pondering you shouldn't be pondering he shouldn't be pondering we shouldn't be pondering you shouldn't be pondering they shouldn't be pondering
Perfect	V-ing perfect
I shouldn't have pondered you shouldn't have pondered he shouldn't have pondered we shouldn't have pondered you shouldn't have pondered they shouldn't have pondered	I shouldn't have been pondering you shouldn't have been pondering he shouldn't have been pondering we shouldn't have been pondering you shouldn't have been pondering they shouldn't have been pondering

Interrogative form

Simple form	V-ing form
should I ponder? should you ponder? should he ponder? should we ponder? should you ponder? should they ponder?	should I be pondering? should you be pondering? should he be pondering? should we be pondering? should you be pondering? should they be pondering?
Perfect	V-ing perfect
should I have pondered? should you have pondered? should he have pondered? should we have pondered? should you have pondered? should they have pondered?	should I have been pondering? should you have been pondering? should he have been pondering? should we have been pondering? should you have been pondering? should they have been pondering?

Interro-negative form

Simple form	V-ing form
shouldn't I ponder? shouldn't you ponder? shouldn't he ponder? shouldn't we ponder? shouldn't you ponder? shouldn't they ponder?	shouldn't I be pondering? shouldn't you be pondering? shouldn't he be pondering? shouldn't we be pondering? shouldn't you be pondering? shouldn't they be pondering?
Perfect	V-ing perfect
shouldn't I have pondered? shouldn't you have pondered? shouldn't he have pondered? shouldn't we have pondered? shouldn't you have pondered? shouldn't they have pondered?	shouldn't I have been pondering? shouldn't you have been pondering? shouldn't he have been pondering? shouldn't we have been pondering? shouldn't you have been pondering? shouldn't they have been pondering?