I could exit you could exit he could exit we could exit you could exit they could exit
V-ing form
I could be exiting you could be exiting he could be exiting we could be exiting you could be exiting they could be exiting
Perfect
I could have exited you could have exited he could have exited we could have exited you could have exited they could have exited
V-ing perfect
I could have been exiting you could have been exiting he could have been exiting we could have been exiting you could have been exiting they could have been exiting
Negation
Simple form
I could not exit you could not exit he could not exit we could not exit you could not exit they could not exit
V-ing form
I could not be exiting you could not be exiting he could not be exiting we could not be exiting you could not be exiting they could not be exiting
Perfect
I could not have exited you could not have exited he could not have exited we could not have exited you could not have exited they could not have exited
V-ing perfect
I could not have been exiting you could not have been exiting he could not have been exiting we could not have been exiting you could not have been exiting they could not have been exiting
Interrogative form
Simple form
could I exit? could you exit? could he exit? could we exit? could you exit? could they exit?
V-ing form
could I be exiting? could you be exiting? could he be exiting? could we be exiting? could you be exiting? could they be exiting?
Perfect
could I have exited? could you have exited? could he have exited? could we have exited? could you have exited? could they have exited?
V-ing perfect
could I have been exiting? could you have been exiting? could he have been exiting? could we have been exiting? could you have been exiting? could they have been exiting?
Interro-negative form
Simple form
could I not exit? could you not exit? could he not exit? could we not exit? could you not exit? could they not exit?
V-ing form
could I not be exiting? could you not be exiting? could he not be exiting? could we not be exiting? could you not be exiting? could they not be exiting?
Perfect
could I not have exited? could you not have exited? could he not have exited? could we not have exited? could you not have exited? could they not have exited?
V-ing perfect
could I not have been exiting? could you not have been exiting? could he not have been exiting? could we not have been exiting? could you not have been exiting? could they not have been exiting?