I could parrot you could parrot she could parrot we could parrot you could parrot they could parrot
V-ing form
I could be parroting you could be parroting she could be parroting we could be parroting you could be parroting they could be parroting
Perfect
I could have parroted you could have parroted she could have parroted we could have parroted you could have parroted they could have parroted
V-ing perfect
I could have been parroting you could have been parroting she could have been parroting we could have been parroting you could have been parroting they could have been parroting
Negation
Simple form
I could not parrot you could not parrot she could not parrot we could not parrot you could not parrot they could not parrot
V-ing form
I could not be parroting you could not be parroting she could not be parroting we could not be parroting you could not be parroting they could not be parroting
Perfect
I could not have parroted you could not have parroted she could not have parroted we could not have parroted you could not have parroted they could not have parroted
V-ing perfect
I could not have been parroting you could not have been parroting she could not have been parroting we could not have been parroting you could not have been parroting they could not have been parroting
Interrogative form
Simple form
could I parrot? could you parrot? could she parrot? could we parrot? could you parrot? could they parrot?
V-ing form
could I be parroting? could you be parroting? could she be parroting? could we be parroting? could you be parroting? could they be parroting?
Perfect
could I have parroted? could you have parroted? could she have parroted? could we have parroted? could you have parroted? could they have parroted?
V-ing perfect
could I have been parroting? could you have been parroting? could she have been parroting? could we have been parroting? could you have been parroting? could they have been parroting?
Interro-negative form
Simple form
could I not parrot? could you not parrot? could she not parrot? could we not parrot? could you not parrot? could they not parrot?
V-ing form
could I not be parroting? could you not be parroting? could she not be parroting? could we not be parroting? could you not be parroting? could they not be parroting?
Perfect
could I not have parroted? could you not have parroted? could she not have parroted? could we not have parroted? could you not have parroted? could they not have parroted?
V-ing perfect
could I not have been parroting? could you not have been parroting? could she not have been parroting? could we not have been parroting? could you not have been parroting? could they not have been parroting?