I could cushion you could cushion he could cushion we could cushion you could cushion they could cushion
V-ing form
I could be cushioning you could be cushioning he could be cushioning we could be cushioning you could be cushioning they could be cushioning
Perfect
I could have cushioned you could have cushioned he could have cushioned we could have cushioned you could have cushioned they could have cushioned
V-ing perfect
I could have been cushioning you could have been cushioning he could have been cushioning we could have been cushioning you could have been cushioning they could have been cushioning
Negation
Simple form
I could not cushion you could not cushion he could not cushion we could not cushion you could not cushion they could not cushion
V-ing form
I could not be cushioning you could not be cushioning he could not be cushioning we could not be cushioning you could not be cushioning they could not be cushioning
Perfect
I could not have cushioned you could not have cushioned he could not have cushioned we could not have cushioned you could not have cushioned they could not have cushioned
V-ing perfect
I could not have been cushioning you could not have been cushioning he could not have been cushioning we could not have been cushioning you could not have been cushioning they could not have been cushioning
Interrogative form
Simple form
could I cushion? could you cushion? could he cushion? could we cushion? could you cushion? could they cushion?
V-ing form
could I be cushioning? could you be cushioning? could he be cushioning? could we be cushioning? could you be cushioning? could they be cushioning?
Perfect
could I have cushioned? could you have cushioned? could he have cushioned? could we have cushioned? could you have cushioned? could they have cushioned?
V-ing perfect
could I have been cushioning? could you have been cushioning? could he have been cushioning? could we have been cushioning? could you have been cushioning? could they have been cushioning?
Interro-negative form
Simple form
could I not cushion? could you not cushion? could he not cushion? could we not cushion? could you not cushion? could they not cushion?
V-ing form
could I not be cushioning? could you not be cushioning? could he not be cushioning? could we not be cushioning? could you not be cushioning? could they not be cushioning?
Perfect
could I not have cushioned? could you not have cushioned? could he not have cushioned? could we not have cushioned? could you not have cushioned? could they not have cushioned?
V-ing perfect
could I not have been cushioning? could you not have been cushioning? could he not have been cushioning? could we not have been cushioning? could you not have been cushioning? could they not have been cushioning?