I can borrow you can borrow he can borrow we can borrow you can borrow they can borrow
V-ing form
I can be borrowing you can be borrowing he can be borrowing we can be borrowing you can be borrowing they can be borrowing
Perfect
I can have borrowed you can have borrowed he can have borrowed we can have borrowed you can have borrowed they can have borrowed
V-ing perfect
I can have been borrowing you can have been borrowing he can have been borrowing we can have been borrowing you can have been borrowing they can have been borrowing
Negation
Simple form
I can't borrow you can't borrow he can't borrow we can't borrow you can't borrow they can't borrow
V-ing form
I can't be borrowing you can't be borrowing he can't be borrowing we can't be borrowing you can't be borrowing they can't be borrowing
Perfect
I can't have borrowed you can't have borrowed he can't have borrowed we can't have borrowed you can't have borrowed they can't have borrowed
V-ing perfect
I can't have been borrowing you can't have been borrowing he can't have been borrowing we can't have been borrowing you can't have been borrowing they can't have been borrowing
Interrogative form
Simple form
can I borrow? can you borrow? can he borrow? can we borrow? can you borrow? can they borrow?
V-ing form
can I be borrowing? can you be borrowing? can he be borrowing? can we be borrowing? can you be borrowing? can they be borrowing?
Perfect
can I have borrowed? can you have borrowed? can he have borrowed? can we have borrowed? can you have borrowed? can they have borrowed?
V-ing perfect
can I have been borrowing? can you have been borrowing? can he have been borrowing? can we have been borrowing? can you have been borrowing? can they have been borrowing?
Interro-negative form
Simple form
can't I borrow? can't you borrow? can't he borrow? can't we borrow? can't you borrow? can't they borrow?
V-ing form
can't I be borrowing? can't you be borrowing? can't he be borrowing? can't we be borrowing? can't you be borrowing? can't they be borrowing?
Perfect
can't I have borrowed? can't you have borrowed? can't he have borrowed? can't we have borrowed? can't you have borrowed? can't they have borrowed?
V-ing perfect
can't I have been borrowing? can't you have been borrowing? can't he have been borrowing? can't we have been borrowing? can't you have been borrowing? can't they have been borrowing?