I can deactivate you can deactivate he can deactivate we can deactivate you can deactivate they can deactivate
V-ing form
I can be deactivating you can be deactivating he can be deactivating we can be deactivating you can be deactivating they can be deactivating
Perfect
I can have deactivated you can have deactivated he can have deactivated we can have deactivated you can have deactivated they can have deactivated
V-ing perfect
I can have been deactivating you can have been deactivating he can have been deactivating we can have been deactivating you can have been deactivating they can have been deactivating
Negation
Simple form
I cannot deactivate you cannot deactivate he cannot deactivate we cannot deactivate you cannot deactivate they cannot deactivate
V-ing form
I cannot be deactivating you cannot be deactivating he cannot be deactivating we cannot be deactivating you cannot be deactivating they cannot be deactivating
Perfect
I cannot have deactivated you cannot have deactivated he cannot have deactivated we cannot have deactivated you cannot have deactivated they cannot have deactivated
V-ing perfect
I cannot have been deactivating you cannot have been deactivating he cannot have been deactivating we cannot have been deactivating you cannot have been deactivating they cannot have been deactivating
Interrogative form
Simple form
can I deactivate? can you deactivate? can he deactivate? can we deactivate? can you deactivate? can they deactivate?
V-ing form
can I be deactivating? can you be deactivating? can he be deactivating? can we be deactivating? can you be deactivating? can they be deactivating?
Perfect
can I have deactivated? can you have deactivated? can he have deactivated? can we have deactivated? can you have deactivated? can they have deactivated?
V-ing perfect
can I have been deactivating? can you have been deactivating? can he have been deactivating? can we have been deactivating? can you have been deactivating? can they have been deactivating?
Interro-negative form
Simple form
can I not deactivate? can you not deactivate? can he not deactivate? can we not deactivate? can you not deactivate? can they not deactivate?
V-ing form
can I not be deactivating? can you not be deactivating? can he not be deactivating? can we not be deactivating? can you not be deactivating? can they not be deactivating?
Perfect
can I not have deactivated? can you not have deactivated? can he not have deactivated? can we not have deactivated? can you not have deactivated? can they not have deactivated?
V-ing perfect
can I not have been deactivating? can you not have been deactivating? can he not have been deactivating? can we not have been deactivating? can you not have been deactivating? can they not have been deactivating?