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