English verb conjugation COULD ROOST

Regular verb: roost - roosted - roosted

Affirmation

Simple form

I could roost
you could roost
he could roost
we could roost
you could roost
they could roost

V-ing form

I could be roosting
you could be roosting
he could be roosting
we could be roosting
you could be roosting
they could be roosting

Perfect

I could have roosted
you could have roosted
he 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
he could have been roosting
we could have been roosting
you could have been roosting
they could have been roosting

Negation

Simple form

I could not roost
you could not roost
he could not roost
we could not roost
you could not roost
they could not roost

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I roost?
could you roost?
could he roost?
could we roost?
could you roost?
could they roost?

V-ing form

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

Perfect

could I have roosted?
could you have roosted?
could he 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 he have been roosting?
could we have been roosting?
could you have been roosting?
could they have been roosting?

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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