I could dismount you could dismount he could dismount we could dismount you could dismount they could dismount
V-ing form
I could be dismounting you could be dismounting he could be dismounting we could be dismounting you could be dismounting they could be dismounting
Perfect
I could have dismounted you could have dismounted he could have dismounted we could have dismounted you could have dismounted they could have dismounted
V-ing perfect
I could have been dismounting you could have been dismounting he could have been dismounting we could have been dismounting you could have been dismounting they could have been dismounting
Negation
Simple form
I could not dismount you could not dismount he could not dismount we could not dismount you could not dismount they could not dismount
V-ing form
I could not be dismounting you could not be dismounting he could not be dismounting we could not be dismounting you could not be dismounting they could not be dismounting
Perfect
I could not have dismounted you could not have dismounted he could not have dismounted we could not have dismounted you could not have dismounted they could not have dismounted
V-ing perfect
I could not have been dismounting you could not have been dismounting he could not have been dismounting we could not have been dismounting you could not have been dismounting they could not have been dismounting
Interrogative form
Simple form
could I dismount? could you dismount? could he dismount? could we dismount? could you dismount? could they dismount?
V-ing form
could I be dismounting? could you be dismounting? could he be dismounting? could we be dismounting? could you be dismounting? could they be dismounting?
Perfect
could I have dismounted? could you have dismounted? could he have dismounted? could we have dismounted? could you have dismounted? could they have dismounted?
V-ing perfect
could I have been dismounting? could you have been dismounting? could he have been dismounting? could we have been dismounting? could you have been dismounting? could they have been dismounting?
Interro-negative form
Simple form
could I not dismount? could you not dismount? could he not dismount? could we not dismount? could you not dismount? could they not dismount?
V-ing form
could I not be dismounting? could you not be dismounting? could he not be dismounting? could we not be dismounting? could you not be dismounting? could they not be dismounting?
Perfect
could I not have dismounted? could you not have dismounted? could he not have dismounted? could we not have dismounted? could you not have dismounted? could they not have dismounted?
V-ing perfect
could I not have been dismounting? could you not have been dismounting? could he not have been dismounting? could we not have been dismounting? could you not have been dismounting? could they not have been dismounting?