I could peal you could peal she could peal we could peal you could peal they could peal
V-ing form
I could be pealing you could be pealing she could be pealing we could be pealing you could be pealing they could be pealing
Perfect
I could have pealed you could have pealed she could have pealed we could have pealed you could have pealed they could have pealed
V-ing perfect
I could have been pealing you could have been pealing she could have been pealing we could have been pealing you could have been pealing they could have been pealing
Negation
Simple form
I could not peal you could not peal she could not peal we could not peal you could not peal they could not peal
V-ing form
I could not be pealing you could not be pealing she could not be pealing we could not be pealing you could not be pealing they could not be pealing
Perfect
I could not have pealed you could not have pealed she could not have pealed we could not have pealed you could not have pealed they could not have pealed
V-ing perfect
I could not have been pealing you could not have been pealing she could not have been pealing we could not have been pealing you could not have been pealing they could not have been pealing
Interrogative form
Simple form
could I peal? could you peal? could she peal? could we peal? could you peal? could they peal?
V-ing form
could I be pealing? could you be pealing? could she be pealing? could we be pealing? could you be pealing? could they be pealing?
Perfect
could I have pealed? could you have pealed? could she have pealed? could we have pealed? could you have pealed? could they have pealed?
V-ing perfect
could I have been pealing? could you have been pealing? could she have been pealing? could we have been pealing? could you have been pealing? could they have been pealing?
Interro-negative form
Simple form
could I not peal? could you not peal? could she not peal? could we not peal? could you not peal? could they not peal?
V-ing form
could I not be pealing? could you not be pealing? could she not be pealing? could we not be pealing? could you not be pealing? could they not be pealing?
Perfect
could I not have pealed? could you not have pealed? could she not have pealed? could we not have pealed? could you not have pealed? could they not have pealed?
V-ing perfect
could I not have been pealing? could you not have been pealing? could she not have been pealing? could we not have been pealing? could you not have been pealing? could they not have been pealing?