I could drive you could drive he could drive we could drive you could drive they could drive
V-ing form
I could be driving you could be driving he could be driving we could be driving you could be driving they could be driving
Perfect
I could have driven you could have driven he could have driven we could have driven you could have driven they could have driven
V-ing perfect
I could have been driving you could have been driving he could have been driving we could have been driving you could have been driving they could have been driving
Negation
Simple form
I could not drive you could not drive he could not drive we could not drive you could not drive they could not drive
V-ing form
I could not be driving you could not be driving he could not be driving we could not be driving you could not be driving they could not be driving
Perfect
I could not have driven you could not have driven he could not have driven we could not have driven you could not have driven they could not have driven
V-ing perfect
I could not have been driving you could not have been driving he could not have been driving we could not have been driving you could not have been driving they could not have been driving
Interrogative form
Simple form
could I drive? could you drive? could he drive? could we drive? could you drive? could they drive?
V-ing form
could I be driving? could you be driving? could he be driving? could we be driving? could you be driving? could they be driving?
Perfect
could I have driven? could you have driven? could he have driven? could we have driven? could you have driven? could they have driven?
V-ing perfect
could I have been driving? could you have been driving? could he have been driving? could we have been driving? could you have been driving? could they have been driving?
Interro-negative form
Simple form
could I not drive? could you not drive? could he not drive? could we not drive? could you not drive? could they not drive?
V-ing form
could I not be driving? could you not be driving? could he not be driving? could we not be driving? could you not be driving? could they not be driving?
Perfect
could I not have driven? could you not have driven? could he not have driven? could we not have driven? could you not have driven? could they not have driven?
V-ing perfect
could I not have been driving? could you not have been driving? could he not have been driving? could we not have been driving? could you not have been driving? could they not have been driving?