I could will you could will he could will we could will you could will they could will
V-ing form
I could be willing you could be willing he could be willing we could be willing you could be willing they could be willing
Perfect
I could have willed you could have willed he could have willed we could have willed you could have willed they could have willed
V-ing perfect
I could have been willing you could have been willing he could have been willing we could have been willing you could have been willing they could have been willing
Negation
Simple form
I could not will you could not will he could not will we could not will you could not will they could not will
V-ing form
I could not be willing you could not be willing he could not be willing we could not be willing you could not be willing they could not be willing
Perfect
I could not have willed you could not have willed he could not have willed we could not have willed you could not have willed they could not have willed
V-ing perfect
I could not have been willing you could not have been willing he could not have been willing we could not have been willing you could not have been willing they could not have been willing
Interrogative form
Simple form
could I will? could you will? could he will? could we will? could you will? could they will?
V-ing form
could I be willing? could you be willing? could he be willing? could we be willing? could you be willing? could they be willing?
Perfect
could I have willed? could you have willed? could he have willed? could we have willed? could you have willed? could they have willed?
V-ing perfect
could I have been willing? could you have been willing? could he have been willing? could we have been willing? could you have been willing? could they have been willing?
Interro-negative form
Simple form
could I not will? could you not will? could he not will? could we not will? could you not will? could they not will?
V-ing form
could I not be willing? could you not be willing? could he not be willing? could we not be willing? could you not be willing? could they not be willing?
Perfect
could I not have willed? could you not have willed? could he not have willed? could we not have willed? could you not have willed? could they not have willed?
V-ing perfect
could I not have been willing? could you not have been willing? could he not have been willing? could we not have been willing? could you not have been willing? could they not have been willing?