I can backhand you can backhand he can backhand we can backhand you can backhand they can backhand
V-ing form
I can be backhanding you can be backhanding he can be backhanding we can be backhanding you can be backhanding they can be backhanding
Perfect
I can have backhanded you can have backhanded he can have backhanded we can have backhanded you can have backhanded they can have backhanded
V-ing perfect
I can have been backhanding you can have been backhanding he can have been backhanding we can have been backhanding you can have been backhanding they can have been backhanding
Negation
Simple form
I can't backhand you can't backhand he can't backhand we can't backhand you can't backhand they can't backhand
V-ing form
I can't be backhanding you can't be backhanding he can't be backhanding we can't be backhanding you can't be backhanding they can't be backhanding
Perfect
I can't have backhanded you can't have backhanded he can't have backhanded we can't have backhanded you can't have backhanded they can't have backhanded
V-ing perfect
I can't have been backhanding you can't have been backhanding he can't have been backhanding we can't have been backhanding you can't have been backhanding they can't have been backhanding
Interrogative form
Simple form
can I backhand? can you backhand? can he backhand? can we backhand? can you backhand? can they backhand?
V-ing form
can I be backhanding? can you be backhanding? can he be backhanding? can we be backhanding? can you be backhanding? can they be backhanding?
Perfect
can I have backhanded? can you have backhanded? can he have backhanded? can we have backhanded? can you have backhanded? can they have backhanded?
V-ing perfect
can I have been backhanding? can you have been backhanding? can he have been backhanding? can we have been backhanding? can you have been backhanding? can they have been backhanding?
Interro-negative form
Simple form
can't I backhand? can't you backhand? can't he backhand? can't we backhand? can't you backhand? can't they backhand?
V-ing form
can't I be backhanding? can't you be backhanding? can't he be backhanding? can't we be backhanding? can't you be backhanding? can't they be backhanding?
Perfect
can't I have backhanded? can't you have backhanded? can't he have backhanded? can't we have backhanded? can't you have backhanded? can't they have backhanded?
V-ing perfect
can't I have been backhanding? can't you have been backhanding? can't he have been backhanding? can't we have been backhanding? can't you have been backhanding? can't they have been backhanding?