English verb conjugation COULD FROST

Regular verb: frost - frosted - frosted

Affirmation

Simple form

I could frost
you could frost
he could frost
we could frost
you could frost
they could frost

V-ing form

I could be frosting
you could be frosting
he could be frosting
we could be frosting
you could be frosting
they could be frosting

Perfect

I could have frosted
you could have frosted
he could have frosted
we could have frosted
you could have frosted
they could have frosted

V-ing perfect

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

Negation

Simple form

I could not frost
you could not frost
he could not frost
we could not frost
you could not frost
they could not frost

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I frost?
could you frost?
could he frost?
could we frost?
could you frost?
could they frost?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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