English verb conjugation
CAN SNOWBALL

Regular verb: snowball - snowballed - snowballed

Affirmation

Simple form	V-ing form
I can snowball you can snowball she can snowball we can snowball you can snowball they can snowball	I can be snowballing you can be snowballing she can be snowballing we can be snowballing you can be snowballing they can be snowballing
Perfect	V-ing perfect
I can have snowballed you can have snowballed she can have snowballed we can have snowballed you can have snowballed they can have snowballed	I can have been snowballing you can have been snowballing she can have been snowballing we can have been snowballing you can have been snowballing they can have been snowballing

Negation

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

Interrogative form

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

Interro-negative form

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