I can advert you can advert he can advert we can advert you can advert they can advert
V-ing form
I can be adverting you can be adverting he can be adverting we can be adverting you can be adverting they can be adverting
Perfect
I can have adverted you can have adverted he can have adverted we can have adverted you can have adverted they can have adverted
V-ing perfect
I can have been adverting you can have been adverting he can have been adverting we can have been adverting you can have been adverting they can have been adverting
Negation
Simple form
I can't advert you can't advert he can't advert we can't advert you can't advert they can't advert
V-ing form
I can't be adverting you can't be adverting he can't be adverting we can't be adverting you can't be adverting they can't be adverting
Perfect
I can't have adverted you can't have adverted he can't have adverted we can't have adverted you can't have adverted they can't have adverted
V-ing perfect
I can't have been adverting you can't have been adverting he can't have been adverting we can't have been adverting you can't have been adverting they can't have been adverting
Interrogative form
Simple form
can I advert? can you advert? can he advert? can we advert? can you advert? can they advert?
V-ing form
can I be adverting? can you be adverting? can he be adverting? can we be adverting? can you be adverting? can they be adverting?
Perfect
can I have adverted? can you have adverted? can he have adverted? can we have adverted? can you have adverted? can they have adverted?
V-ing perfect
can I have been adverting? can you have been adverting? can he have been adverting? can we have been adverting? can you have been adverting? can they have been adverting?
Interro-negative form
Simple form
can't I advert? can't you advert? can't he advert? can't we advert? can't you advert? can't they advert?
V-ing form
can't I be adverting? can't you be adverting? can't he be adverting? can't we be adverting? can't you be adverting? can't they be adverting?
Perfect
can't I have adverted? can't you have adverted? can't he have adverted? can't we have adverted? can't you have adverted? can't they have adverted?
V-ing perfect
can't I have been adverting? can't you have been adverting? can't he have been adverting? can't we have been adverting? can't you have been adverting? can't they have been adverting?