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 can't deactivate you can't deactivate he can't deactivate we can't deactivate you can't deactivate they can't deactivate
V-ing form
I can't be deactivating you can't be deactivating he can't be deactivating we can't be deactivating you can't be deactivating they can't be deactivating
Perfect
I can't have deactivated you can't have deactivated he can't have deactivated we can't have deactivated you can't have deactivated they can't have deactivated
V-ing perfect
I can't have been deactivating you can't have been deactivating he can't have been deactivating we can't have been deactivating you can't have been deactivating they can't 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't I deactivate? can't you deactivate? can't he deactivate? can't we deactivate? can't you deactivate? can't they deactivate?
V-ing form
can't I be deactivating? can't you be deactivating? can't he be deactivating? can't we be deactivating? can't you be deactivating? can't they be deactivating?
Perfect
can't I have deactivated? can't you have deactivated? can't he have deactivated? can't we have deactivated? can't you have deactivated? can't they have deactivated?
V-ing perfect
can't I have been deactivating? can't you have been deactivating? can't he have been deactivating? can't we have been deactivating? can't you have been deactivating? can't they have been deactivating?