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