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