English verb conjugation
COULD DETERMINE

Regular verb: determine - determined - determined

Affirmation

Simple form	V-ing form
I could determine you could determine she could determine we could determine you could determine they could determine	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	V-ing 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	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	V-ing form
I couldn't determine you couldn't determine she couldn't determine we couldn't determine you couldn't determine they couldn't determine	I couldn't be determining you couldn't be determining she couldn't be determining we couldn't be determining you couldn't be determining they couldn't be determining
Perfect	V-ing perfect
I couldn't have determined you couldn't have determined she couldn't have determined we couldn't have determined you couldn't have determined they couldn't have determined	I couldn't have been determining you couldn't have been determining she couldn't have been determining we couldn't have been determining you couldn't have been determining they couldn't have been determining

Interrogative form

Simple form	V-ing form
could I determine? could you determine? could she determine? could we determine? could you determine? could they determine?	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	V-ing 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?	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	V-ing form
couldn't I determine? couldn't you determine? couldn't she determine? couldn't we determine? couldn't you determine? couldn't they determine?	couldn't I be determining? couldn't you be determining? couldn't she be determining? couldn't we be determining? couldn't you be determining? couldn't they be determining?
Perfect	V-ing perfect
couldn't I have determined? couldn't you have determined? couldn't she have determined? couldn't we have determined? couldn't you have determined? couldn't they have determined?	couldn't I have been determining? couldn't you have been determining? couldn't she have been determining? couldn't we have been determining? couldn't you have been determining? couldn't they have been determining?