I could panic you could panic she could panic we could panic you could panic they could panic
V-ing form
I could be panicing you could be panicing she could be panicing we could be panicing you could be panicing they could be panicing
Perfect
I could have paniced you could have paniced she could have paniced we could have paniced you could have paniced they could have paniced
V-ing perfect
I could have been panicing you could have been panicing she could have been panicing we could have been panicing you could have been panicing they could have been panicing
Negation
Simple form
I could not panic you could not panic she could not panic we could not panic you could not panic they could not panic
V-ing form
I could not be panicing you could not be panicing she could not be panicing we could not be panicing you could not be panicing they could not be panicing
Perfect
I could not have paniced you could not have paniced she could not have paniced we could not have paniced you could not have paniced they could not have paniced
V-ing perfect
I could not have been panicing you could not have been panicing she could not have been panicing we could not have been panicing you could not have been panicing they could not have been panicing
Interrogative form
Simple form
could I panic? could you panic? could she panic? could we panic? could you panic? could they panic?
V-ing form
could I be panicing? could you be panicing? could she be panicing? could we be panicing? could you be panicing? could they be panicing?
Perfect
could I have paniced? could you have paniced? could she have paniced? could we have paniced? could you have paniced? could they have paniced?
V-ing perfect
could I have been panicing? could you have been panicing? could she have been panicing? could we have been panicing? could you have been panicing? could they have been panicing?
Interro-negative form
Simple form
could I not panic? could you not panic? could she not panic? could we not panic? could you not panic? could they not panic?
V-ing form
could I not be panicing? could you not be panicing? could she not be panicing? could we not be panicing? could you not be panicing? could they not be panicing?
Perfect
could I not have paniced? could you not have paniced? could she not have paniced? could we not have paniced? could you not have paniced? could they not have paniced?
V-ing perfect
could I not have been panicing? could you not have been panicing? could she not have been panicing? could we not have been panicing? could you not have been panicing? could they not have been panicing?