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 couldn't will you couldn't will he couldn't will we couldn't will you couldn't will they couldn't will
V-ing form
I couldn't be willing you couldn't be willing he couldn't be willing we couldn't be willing you couldn't be willing they couldn't be willing
Perfect
I couldn't have willed you couldn't have willed he couldn't have willed we couldn't have willed you couldn't have willed they couldn't have willed
V-ing perfect
I couldn't have been willing you couldn't have been willing he couldn't have been willing we couldn't have been willing you couldn't have been willing they couldn't 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
couldn't I will? couldn't you will? couldn't he will? couldn't we will? couldn't you will? couldn't they will?
V-ing form
couldn't I be willing? couldn't you be willing? couldn't he be willing? couldn't we be willing? couldn't you be willing? couldn't they be willing?
Perfect
couldn't I have willed? couldn't you have willed? couldn't he have willed? couldn't we have willed? couldn't you have willed? couldn't they have willed?
V-ing perfect
couldn't I have been willing? couldn't you have been willing? couldn't he have been willing? couldn't we have been willing? couldn't you have been willing? couldn't they have been willing?