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