could vector
Regular verb: vector - vectored- vectored

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could vector
you could vector
he could vector
we could vector
you could vector
they could vector 	I could be vectoring
you could be vectoring
he could be vectoring
we could be vectoring
you could be vectoring
they could be vectoring	I could have vectored
you could have vectored
he could have vectored
we could have vectored
you could have vectored
they could have vectored	I could have been vectoring
you could have been vectoring
he could have been vectoring
we could have been vectoring
you could have been vectoring
they could have been vectoring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't vector
you couldn't vector
he couldn't vector
we couldn't vector
you couldn't vector
they couldn't vector 	I couldn't be vectoring
you couldn't be vectoring
he couldn't be vectoring
we couldn't be vectoring
you couldn't be vectoring
they couldn't be vectoring	I couldn't have vectored
you couldn't have vectored
he couldn't have vectored
we couldn't have vectored
you couldn't have vectored
they couldn't have vectored	I couldn't have been vectoring
you couldn't have been vectoring
he couldn't have been vectoring
we couldn't have been vectoring
you couldn't have been vectoring
they couldn't have been vectoring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I vector?
could you vector?
could he vector?
could we vector?
could you vector?
could they vector? 	could I be vectoring?
could you be vectoring?
could he be vectoring?
could we be vectoring?
could you be vectoring?
could they be vectoring? 	could I have vectored?
could you have vectored?
could he have vectored?
could we have vectored?
could you have vectored?
could they have vectored? 	could I have been vectoring?
could you have been vectoring?
could he have been vectoring?
could we have been vectoring?
could you have been vectoring?
could they have been vectoring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I vector?
couldn't you vector?
couldn't he vector?
couldn't we vector?
couldn't you vector?
couldn't they vector? 	couldn't I be vectoring?
couldn't you be vectoring?
couldn't he be vectoring?
couldn't we be vectoring?
couldn't you be vectoring?
couldn't they be vectoring? 	couldn't I have vectored?
couldn't you have vectored?
couldn't he have vectored?
couldn't we have vectored?
couldn't you have vectored?
couldn't they have vectored? 	couldn't I have been vectoring?
couldn't you have been vectoring?
couldn't he have been vectoring?
couldn't we have been vectoring?
couldn't you have been vectoring?
couldn't they have been vectoring?