I can autograph you can autograph he can autograph we can autograph you can autograph they can autograph
V-ing form
I can be autographing you can be autographing he can be autographing we can be autographing you can be autographing they can be autographing
Perfect
I can have autographed you can have autographed he can have autographed we can have autographed you can have autographed they can have autographed
V-ing perfect
I can have been autographing you can have been autographing he can have been autographing we can have been autographing you can have been autographing they can have been autographing
Negation
Simple form
I can't autograph you can't autograph he can't autograph we can't autograph you can't autograph they can't autograph
V-ing form
I can't be autographing you can't be autographing he can't be autographing we can't be autographing you can't be autographing they can't be autographing
Perfect
I can't have autographed you can't have autographed he can't have autographed we can't have autographed you can't have autographed they can't have autographed
V-ing perfect
I can't have been autographing you can't have been autographing he can't have been autographing we can't have been autographing you can't have been autographing they can't have been autographing
Interrogative form
Simple form
can I autograph? can you autograph? can he autograph? can we autograph? can you autograph? can they autograph?
V-ing form
can I be autographing? can you be autographing? can he be autographing? can we be autographing? can you be autographing? can they be autographing?
Perfect
can I have autographed? can you have autographed? can he have autographed? can we have autographed? can you have autographed? can they have autographed?
V-ing perfect
can I have been autographing? can you have been autographing? can he have been autographing? can we have been autographing? can you have been autographing? can they have been autographing?
Interro-negative form
Simple form
can't I autograph? can't you autograph? can't he autograph? can't we autograph? can't you autograph? can't they autograph?
V-ing form
can't I be autographing? can't you be autographing? can't he be autographing? can't we be autographing? can't you be autographing? can't they be autographing?
Perfect
can't I have autographed? can't you have autographed? can't he have autographed? can't we have autographed? can't you have autographed? can't they have autographed?
V-ing perfect
can't I have been autographing? can't you have been autographing? can't he have been autographing? can't we have been autographing? can't you have been autographing? can't they have been autographing?