English verb conjugation COULD PREALTER

Regular verb: prealter - prealtered - prealtered

Affirmation

Simple form

I could prealter
you could prealter
she could prealter
we could prealter
you could prealter
they could prealter

V-ing form

I could be prealtering
you could be prealtering
she could be prealtering
we could be prealtering
you could be prealtering
they could be prealtering

Perfect

I could have prealtered
you could have prealtered
she could have prealtered
we could have prealtered
you could have prealtered
they could have prealtered

V-ing perfect

I could have been prealtering
you could have been prealtering
she could have been prealtering
we could have been prealtering
you could have been prealtering
they could have been prealtering

Negation

Simple form

I couldn't prealter
you couldn't prealter
she couldn't prealter
we couldn't prealter
you couldn't prealter
they couldn't prealter

V-ing form

I couldn't be prealtering
you couldn't be prealtering
she couldn't be prealtering
we couldn't be prealtering
you couldn't be prealtering
they couldn't be prealtering

Perfect

I couldn't have prealtered
you couldn't have prealtered
she couldn't have prealtered
we couldn't have prealtered
you couldn't have prealtered
they couldn't have prealtered

V-ing perfect

I couldn't have been prealtering
you couldn't have been prealtering
she couldn't have been prealtering
we couldn't have been prealtering
you couldn't have been prealtering
they couldn't have been prealtering

Interrogative form

Simple form

could I prealter?
could you prealter?
could she prealter?
could we prealter?
could you prealter?
could they prealter?

V-ing form

could I be prealtering?
could you be prealtering?
could she be prealtering?
could we be prealtering?
could you be prealtering?
could they be prealtering?

Perfect

could I have prealtered?
could you have prealtered?
could she have prealtered?
could we have prealtered?
could you have prealtered?
could they have prealtered?

V-ing perfect

could I have been prealtering?
could you have been prealtering?
could she have been prealtering?
could we have been prealtering?
could you have been prealtering?
could they have been prealtering?

Interro-negative form

Simple form

couldn't I prealter?
couldn't you prealter?
couldn't she prealter?
couldn't we prealter?
couldn't you prealter?
couldn't they prealter?

V-ing form

couldn't I be prealtering?
couldn't you be prealtering?
couldn't she be prealtering?
couldn't we be prealtering?
couldn't you be prealtering?
couldn't they be prealtering?

Perfect

couldn't I have prealtered?
couldn't you have prealtered?
couldn't she have prealtered?
couldn't we have prealtered?
couldn't you have prealtered?
couldn't they have prealtered?

V-ing perfect

couldn't I have been prealtering?
couldn't you have been prealtering?
couldn't she have been prealtering?
couldn't we have been prealtering?
couldn't you have been prealtering?
couldn't they have been prealtering?

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