I can slam you can slam she can slam we can slam you can slam they can slam
V-ing form
I can be slamming you can be slamming she can be slamming we can be slamming you can be slamming they can be slamming
Perfect
I can have slammed you can have slammed she can have slammed we can have slammed you can have slammed they can have slammed
V-ing perfect
I can have been slamming you can have been slamming she can have been slamming we can have been slamming you can have been slamming they can have been slamming
Negation
Simple form
I can't slam you can't slam she can't slam we can't slam you can't slam they can't slam
V-ing form
I can't be slamming you can't be slamming she can't be slamming we can't be slamming you can't be slamming they can't be slamming
Perfect
I can't have slammed you can't have slammed she can't have slammed we can't have slammed you can't have slammed they can't have slammed
V-ing perfect
I can't have been slamming you can't have been slamming she can't have been slamming we can't have been slamming you can't have been slamming they can't have been slamming
Interrogative form
Simple form
can I slam? can you slam? can she slam? can we slam? can you slam? can they slam?
V-ing form
can I be slamming? can you be slamming? can she be slamming? can we be slamming? can you be slamming? can they be slamming?
Perfect
can I have slammed? can you have slammed? can she have slammed? can we have slammed? can you have slammed? can they have slammed?
V-ing perfect
can I have been slamming? can you have been slamming? can she have been slamming? can we have been slamming? can you have been slamming? can they have been slamming?
Interro-negative form
Simple form
can't I slam? can't you slam? can't she slam? can't we slam? can't you slam? can't they slam?
V-ing form
can't I be slamming? can't you be slamming? can't she be slamming? can't we be slamming? can't you be slamming? can't they be slamming?
Perfect
can't I have slammed? can't you have slammed? can't she have slammed? can't we have slammed? can't you have slammed? can't they have slammed?
V-ing perfect
can't I have been slamming? can't you have been slamming? can't she have been slamming? can't we have been slamming? can't you have been slamming? can't they have been slamming?