English verb conjugation COULD SNOWBALL

Regular verb: snowball - snowballed - snowballed

Affirmation

Simple form

I could snowball
you could snowball
he could snowball
we could snowball
you could snowball
they could snowball

V-ing form

I could be snowballing
you could be snowballing
he could be snowballing
we could be snowballing
you could be snowballing
they could be snowballing

Perfect

I could have snowballed
you could have snowballed
he could have snowballed
we could have snowballed
you could have snowballed
they could have snowballed

V-ing perfect

I could have been snowballing
you could have been snowballing
he could have been snowballing
we could have been snowballing
you could have been snowballing
they could have been snowballing

Negation

Simple form

I could not snowball
you could not snowball
he could not snowball
we could not snowball
you could not snowball
they could not snowball

V-ing form

I could not be snowballing
you could not be snowballing
he could not be snowballing
we could not be snowballing
you could not be snowballing
they could not be snowballing

Perfect

I could not have snowballed
you could not have snowballed
he could not have snowballed
we could not have snowballed
you could not have snowballed
they could not have snowballed

V-ing perfect

I could not have been snowballing
you could not have been snowballing
he could not have been snowballing
we could not have been snowballing
you could not have been snowballing
they could not have been snowballing

Interrogative form

Simple form

could I snowball?
could you snowball?
could he snowball?
could we snowball?
could you snowball?
could they snowball?

V-ing form

could I be snowballing?
could you be snowballing?
could he be snowballing?
could we be snowballing?
could you be snowballing?
could they be snowballing?

Perfect

could I have snowballed?
could you have snowballed?
could he have snowballed?
could we have snowballed?
could you have snowballed?
could they have snowballed?

V-ing perfect

could I have been snowballing?
could you have been snowballing?
could he have been snowballing?
could we have been snowballing?
could you have been snowballing?
could they have been snowballing?

Interro-negative form

Simple form

could I not snowball?
could you not snowball?
could he not snowball?
could we not snowball?
could you not snowball?
could they not snowball?

V-ing form

could I not be snowballing?
could you not be snowballing?
could he not be snowballing?
could we not be snowballing?
could you not be snowballing?
could they not be snowballing?

Perfect

could I not have snowballed?
could you not have snowballed?
could he not have snowballed?
could we not have snowballed?
could you not have snowballed?
could they not have snowballed?

V-ing perfect

could I not have been snowballing?
could you not have been snowballing?
could he not have been snowballing?
could we not have been snowballing?
could you not have been snowballing?
could they not have been snowballing?

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