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