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 couldn't snowball
you couldn't snowball
he couldn't snowball
we couldn't snowball
you couldn't snowball
they couldn't snowball

V-ing form

I couldn't be snowballing
you couldn't be snowballing
he couldn't be snowballing
we couldn't be snowballing
you couldn't be snowballing
they couldn't be snowballing

Perfect

I couldn't have snowballed
you couldn't have snowballed
he couldn't have snowballed
we couldn't have snowballed
you couldn't have snowballed
they couldn't have snowballed

V-ing perfect

I couldn't have been snowballing
you couldn't have been snowballing
he couldn't have been snowballing
we couldn't have been snowballing
you couldn't have been snowballing
they couldn't 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

couldn't I snowball?
couldn't you snowball?
couldn't he snowball?
couldn't we snowball?
couldn't you snowball?
couldn't they snowball?

V-ing form

couldn't I be snowballing?
couldn't you be snowballing?
couldn't he be snowballing?
couldn't we be snowballing?
couldn't you be snowballing?
couldn't they be snowballing?

Perfect

couldn't I have snowballed?
couldn't you have snowballed?
couldn't he have snowballed?
couldn't we have snowballed?
couldn't you have snowballed?
couldn't they have snowballed?

V-ing perfect

couldn't I have been snowballing?
couldn't you have been snowballing?
couldn't he have been snowballing?
couldn't we have been snowballing?
couldn't you have been snowballing?
couldn't they have been snowballing?

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