English verb conjugation COULD ROOST

Regular verb: roost - roosted - roosted

Affirmation

Simple form

I could roost
you could roost
she could roost
we could roost
you could roost
they could roost

V-ing form

I could be roosting
you could be roosting
she could be roosting
we could be roosting
you could be roosting
they could be roosting

Perfect

I could have roosted
you could have roosted
she could have roosted
we could have roosted
you could have roosted
they could have roosted

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I roost?
could you roost?
could she roost?
could we roost?
could you roost?
could they roost?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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