I could agonize you could agonize he could agonize we could agonize you could agonize they could agonize
V-ing form
I could be agonizing you could be agonizing he could be agonizing we could be agonizing you could be agonizing they could be agonizing
Perfect
I could have agonized you could have agonized he could have agonized we could have agonized you could have agonized they could have agonized
V-ing perfect
I could have been agonizing you could have been agonizing he could have been agonizing we could have been agonizing you could have been agonizing they could have been agonizing
Negation
Simple form
I could not agonize you could not agonize he could not agonize we could not agonize you could not agonize they could not agonize
V-ing form
I could not be agonizing you could not be agonizing he could not be agonizing we could not be agonizing you could not be agonizing they could not be agonizing
Perfect
I could not have agonized you could not have agonized he could not have agonized we could not have agonized you could not have agonized they could not have agonized
V-ing perfect
I could not have been agonizing you could not have been agonizing he could not have been agonizing we could not have been agonizing you could not have been agonizing they could not have been agonizing
Interrogative form
Simple form
could I agonize? could you agonize? could he agonize? could we agonize? could you agonize? could they agonize?
V-ing form
could I be agonizing? could you be agonizing? could he be agonizing? could we be agonizing? could you be agonizing? could they be agonizing?
Perfect
could I have agonized? could you have agonized? could he have agonized? could we have agonized? could you have agonized? could they have agonized?
V-ing perfect
could I have been agonizing? could you have been agonizing? could he have been agonizing? could we have been agonizing? could you have been agonizing? could they have been agonizing?
Interro-negative form
Simple form
could I not agonize? could you not agonize? could he not agonize? could we not agonize? could you not agonize? could they not agonize?
V-ing form
could I not be agonizing? could you not be agonizing? could he not be agonizing? could we not be agonizing? could you not be agonizing? could they not be agonizing?
Perfect
could I not have agonized? could you not have agonized? could he not have agonized? could we not have agonized? could you not have agonized? could they not have agonized?
V-ing perfect
could I not have been agonizing? could you not have been agonizing? could he not have been agonizing? could we not have been agonizing? could you not have been agonizing? could they not have been agonizing?