English verb conjugation COULD BOOK

Regular verb: book - booked - booked


Affirmation

Simple form

I could book
you could book
he could book
we could book
you could book
they could book

V-ing form

I could be booking
you could be booking
he could be booking
we could be booking
you could be booking
they could be booking

Perfect

I could have booked
you could have booked
he could have booked
we could have booked
you could have booked
they could have booked

V-ing perfect

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

Negation

Simple form

I could not book
you could not book
he could not book
we could not book
you could not book
they could not book

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I book?
could you book?
could he book?
could we book?
could you book?
could they book?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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