English verb conjugation
SHOULD SNOWBALL

Regular verb: snowball - snowballed - snowballed

Affirmation

Simple form	V-ing form
I'd snowball you'd snowball he'd snowball we'd snowball you'd snowball they'd snowball	I'd be snowballing you'd be snowballing he'd be snowballing we'd be snowballing you'd be snowballing they'd be snowballing
Perfect	V-ing perfect
I should've snowballed you should've snowballed he should've snowballed we should've snowballed you should've snowballed they should've snowballed	I should've been snowballing you should've been snowballing he should've been snowballing we should've been snowballing you should've been snowballing they should've been snowballing

Negation

Simple form	V-ing form
I shouldn't snowball you shouldn't snowball he shouldn't snowball we shouldn't snowball you shouldn't snowball they shouldn't snowball	I shouldn't be snowballing you shouldn't be snowballing he shouldn't be snowballing we shouldn't be snowballing you shouldn't be snowballing they shouldn't be snowballing
Perfect	V-ing perfect
I shouldn't have snowballed you shouldn't have snowballed he shouldn't have snowballed we shouldn't have snowballed you shouldn't have snowballed they shouldn't have snowballed	I shouldn't have been snowballing you shouldn't have been snowballing he shouldn't have been snowballing we shouldn't have been snowballing you shouldn't have been snowballing they shouldn't have been snowballing

Interrogative form

Simple form	V-ing form
should I snowball? should you snowball? should he snowball? should we snowball? should you snowball? should they snowball?	should I be snowballing? should you be snowballing? should he be snowballing? should we be snowballing? should you be snowballing? should they be snowballing?
Perfect	V-ing perfect
should I have snowballed? should you have snowballed? should he have snowballed? should we have snowballed? should you have snowballed? should they have snowballed?	should I have been snowballing? should you have been snowballing? should he have been snowballing? should we have been snowballing? should you have been snowballing? should they have been snowballing?

Interro-negative form

Simple form	V-ing form
shouldn't I snowball? shouldn't you snowball? shouldn't he snowball? shouldn't we snowball? shouldn't you snowball? shouldn't they snowball?	shouldn't I be snowballing? shouldn't you be snowballing? shouldn't he be snowballing? shouldn't we be snowballing? shouldn't you be snowballing? shouldn't they be snowballing?
Perfect	V-ing perfect
shouldn't I have snowballed? shouldn't you have snowballed? shouldn't he have snowballed? shouldn't we have snowballed? shouldn't you have snowballed? shouldn't they have snowballed?	shouldn't I have been snowballing? shouldn't you have been snowballing? shouldn't he have been snowballing? shouldn't we have been snowballing? shouldn't you have been snowballing? shouldn't they have been snowballing?