I could fan you could fan she could fan we could fan you could fan they could fan
V-ing form
I could be fanning you could be fanning she could be fanning we could be fanning you could be fanning they could be fanning
Perfect
I could have fanned you could have fanned she could have fanned we could have fanned you could have fanned they could have fanned
V-ing perfect
I could have been fanning you could have been fanning she could have been fanning we could have been fanning you could have been fanning they could have been fanning
Negation
Simple form
I could not fan you could not fan she could not fan we could not fan you could not fan they could not fan
V-ing form
I could not be fanning you could not be fanning she could not be fanning we could not be fanning you could not be fanning they could not be fanning
Perfect
I could not have fanned you could not have fanned she could not have fanned we could not have fanned you could not have fanned they could not have fanned
V-ing perfect
I could not have been fanning you could not have been fanning she could not have been fanning we could not have been fanning you could not have been fanning they could not have been fanning
Interrogative form
Simple form
could I fan? could you fan? could she fan? could we fan? could you fan? could they fan?
V-ing form
could I be fanning? could you be fanning? could she be fanning? could we be fanning? could you be fanning? could they be fanning?
Perfect
could I have fanned? could you have fanned? could she have fanned? could we have fanned? could you have fanned? could they have fanned?
V-ing perfect
could I have been fanning? could you have been fanning? could she have been fanning? could we have been fanning? could you have been fanning? could they have been fanning?
Interro-negative form
Simple form
could I not fan? could you not fan? could she not fan? could we not fan? could you not fan? could they not fan?
V-ing form
could I not be fanning? could you not be fanning? could she not be fanning? could we not be fanning? could you not be fanning? could they not be fanning?
Perfect
could I not have fanned? could you not have fanned? could she not have fanned? could we not have fanned? could you not have fanned? could they not have fanned?
V-ing perfect
could I not have been fanning? could you not have been fanning? could she not have been fanning? could we not have been fanning? could you not have been fanning? could they not have been fanning?