I can delete you can delete he can delete we can delete you can delete they can delete
V-ing form
I can be deleting you can be deleting he can be deleting we can be deleting you can be deleting they can be deleting
Perfect
I can have deleted you can have deleted he can have deleted we can have deleted you can have deleted they can have deleted
V-ing perfect
I can have been deleting you can have been deleting he can have been deleting we can have been deleting you can have been deleting they can have been deleting
Negation
Simple form
I cannot delete you cannot delete he cannot delete we cannot delete you cannot delete they cannot delete
V-ing form
I cannot be deleting you cannot be deleting he cannot be deleting we cannot be deleting you cannot be deleting they cannot be deleting
Perfect
I cannot have deleted you cannot have deleted he cannot have deleted we cannot have deleted you cannot have deleted they cannot have deleted
V-ing perfect
I cannot have been deleting you cannot have been deleting he cannot have been deleting we cannot have been deleting you cannot have been deleting they cannot have been deleting
Interrogative form
Simple form
can I delete? can you delete? can he delete? can we delete? can you delete? can they delete?
V-ing form
can I be deleting? can you be deleting? can he be deleting? can we be deleting? can you be deleting? can they be deleting?
Perfect
can I have deleted? can you have deleted? can he have deleted? can we have deleted? can you have deleted? can they have deleted?
V-ing perfect
can I have been deleting? can you have been deleting? can he have been deleting? can we have been deleting? can you have been deleting? can they have been deleting?
Interro-negative form
Simple form
can I not delete? can you not delete? can he not delete? can we not delete? can you not delete? can they not delete?
V-ing form
can I not be deleting? can you not be deleting? can he not be deleting? can we not be deleting? can you not be deleting? can they not be deleting?
Perfect
can I not have deleted? can you not have deleted? can he not have deleted? can we not have deleted? can you not have deleted? can they not have deleted?
V-ing perfect
can I not have been deleting? can you not have been deleting? can he not have been deleting? can we not have been deleting? can you not have been deleting? can they not have been deleting?