could bisect
Regular verb: bisect - bisected- bisected

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could bisect
you could bisect
she could bisect
we could bisect
you could bisect
they could bisect 	I could be bisecting
you could be bisecting
she could be bisecting
we could be bisecting
you could be bisecting
they could be bisecting	I could have bisected
you could have bisected
she could have bisected
we could have bisected
you could have bisected
they could have bisected	I could have been bisecting
you could have been bisecting
she could have been bisecting
we could have been bisecting
you could have been bisecting
they could have been bisecting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't bisect
you couldn't bisect
she couldn't bisect
we couldn't bisect
you couldn't bisect
they couldn't bisect 	I couldn't be bisecting
you couldn't be bisecting
she couldn't be bisecting
we couldn't be bisecting
you couldn't be bisecting
they couldn't be bisecting	I couldn't have bisected
you couldn't have bisected
she couldn't have bisected
we couldn't have bisected
you couldn't have bisected
they couldn't have bisected	I couldn't have been bisecting
you couldn't have been bisecting
she couldn't have been bisecting
we couldn't have been bisecting
you couldn't have been bisecting
they couldn't have been bisecting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I bisect?
could you bisect?
could she bisect?
could we bisect?
could you bisect?
could they bisect? 	could I be bisecting?
could you be bisecting?
could she be bisecting?
could we be bisecting?
could you be bisecting?
could they be bisecting? 	could I have bisected?
could you have bisected?
could she have bisected?
could we have bisected?
could you have bisected?
could they have bisected? 	could I have been bisecting?
could you have been bisecting?
could she have been bisecting?
could we have been bisecting?
could you have been bisecting?
could they have been bisecting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I bisect?
couldn't you bisect?
couldn't she bisect?
couldn't we bisect?
couldn't you bisect?
couldn't they bisect? 	couldn't I be bisecting?
couldn't you be bisecting?
couldn't she be bisecting?
couldn't we be bisecting?
couldn't you be bisecting?
couldn't they be bisecting? 	couldn't I have bisected?
couldn't you have bisected?
couldn't she have bisected?
couldn't we have bisected?
couldn't you have bisected?
couldn't they have bisected? 	couldn't I have been bisecting?
couldn't you have been bisecting?
couldn't she have been bisecting?
couldn't we have been bisecting?
couldn't you have been bisecting?
couldn't they have been bisecting?