I could determine you could determine she could determine we could determine you could determine they could determine
V-ing form
I could be determining you could be determining she could be determining we could be determining you could be determining they could be determining
Perfect
I could have determined you could have determined she could have determined we could have determined you could have determined they could have determined
V-ing perfect
I could have been determining you could have been determining she could have been determining we could have been determining you could have been determining they could have been determining
Negation
Simple form
I could not determine you could not determine she could not determine we could not determine you could not determine they could not determine
V-ing form
I could not be determining you could not be determining she could not be determining we could not be determining you could not be determining they could not be determining
Perfect
I could not have determined you could not have determined she could not have determined we could not have determined you could not have determined they could not have determined
V-ing perfect
I could not have been determining you could not have been determining she could not have been determining we could not have been determining you could not have been determining they could not have been determining
Interrogative form
Simple form
could I determine? could you determine? could she determine? could we determine? could you determine? could they determine?
V-ing form
could I be determining? could you be determining? could she be determining? could we be determining? could you be determining? could they be determining?
Perfect
could I have determined? could you have determined? could she have determined? could we have determined? could you have determined? could they have determined?
V-ing perfect
could I have been determining? could you have been determining? could she have been determining? could we have been determining? could you have been determining? could they have been determining?
Interro-negative form
Simple form
could I not determine? could you not determine? could she not determine? could we not determine? could you not determine? could they not determine?
V-ing form
could I not be determining? could you not be determining? could she not be determining? could we not be determining? could you not be determining? could they not be determining?
Perfect
could I not have determined? could you not have determined? could she not have determined? could we not have determined? could you not have determined? could they not have determined?
V-ing perfect
could I not have been determining? could you not have been determining? could she not have been determining? could we not have been determining? could you not have been determining? could they not have been determining?