I can excise you can excise he can excise we can excise you can excise they can excise
V-ing form
I can be excising you can be excising he can be excising we can be excising you can be excising they can be excising
Perfect
I can have excised you can have excised he can have excised we can have excised you can have excised they can have excised
V-ing perfect
I can have been excising you can have been excising he can have been excising we can have been excising you can have been excising they can have been excising
Negation
Simple form
I can't excise you can't excise he can't excise we can't excise you can't excise they can't excise
V-ing form
I can't be excising you can't be excising he can't be excising we can't be excising you can't be excising they can't be excising
Perfect
I can't have excised you can't have excised he can't have excised we can't have excised you can't have excised they can't have excised
V-ing perfect
I can't have been excising you can't have been excising he can't have been excising we can't have been excising you can't have been excising they can't have been excising
Interrogative form
Simple form
can I excise? can you excise? can he excise? can we excise? can you excise? can they excise?
V-ing form
can I be excising? can you be excising? can he be excising? can we be excising? can you be excising? can they be excising?
Perfect
can I have excised? can you have excised? can he have excised? can we have excised? can you have excised? can they have excised?
V-ing perfect
can I have been excising? can you have been excising? can he have been excising? can we have been excising? can you have been excising? can they have been excising?
Interro-negative form
Simple form
can't I excise? can't you excise? can't he excise? can't we excise? can't you excise? can't they excise?
V-ing form
can't I be excising? can't you be excising? can't he be excising? can't we be excising? can't you be excising? can't they be excising?
Perfect
can't I have excised? can't you have excised? can't he have excised? can't we have excised? can't you have excised? can't they have excised?
V-ing perfect
can't I have been excising? can't you have been excising? can't he have been excising? can't we have been excising? can't you have been excising? can't they have been excising?