could determine
Regular verb: determine - determined- determined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?