could borrow
Regular verb: borrow - borrowed- borrowed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could borrow
you could borrow
he could borrow
we could borrow
you could borrow
they could borrow 	I could be borrowing
you could be borrowing
he could be borrowing
we could be borrowing
you could be borrowing
they could be borrowing	I could have borrowed
you could have borrowed
he could have borrowed
we could have borrowed
you could have borrowed
they could have borrowed	I could have been borrowing
you could have been borrowing
he could have been borrowing
we could have been borrowing
you could have been borrowing
they could have been borrowing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not borrow
you could not borrow
he could not borrow
we could not borrow
you could not borrow
they could not borrow 	I could not be borrowing
you could not be borrowing
he could not be borrowing
we could not be borrowing
you could not be borrowing
they could not be borrowing	I could not have borrowed
you could not have borrowed
he could not have borrowed
we could not have borrowed
you could not have borrowed
they could not have borrowed	I could not have been borrowing
you could not have been borrowing
he could not have been borrowing
we could not have been borrowing
you could not have been borrowing
they could not have been borrowing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I borrow?
could you borrow?
could he borrow?
could we borrow?
could you borrow?
could they borrow? 	could I be borrowing?
could you be borrowing?
could he be borrowing?
could we be borrowing?
could you be borrowing?
could they be borrowing? 	could I have borrowed?
could you have borrowed?
could he have borrowed?
could we have borrowed?
could you have borrowed?
could they have borrowed? 	could I have been borrowing?
could you have been borrowing?
could he have been borrowing?
could we have been borrowing?
could you have been borrowing?
could they have been borrowing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not borrow?
could you not borrow?
could he not borrow?
could we not borrow?
could you not borrow?
could they not borrow? 	could I not be borrowing?
could you not be borrowing?
could he not be borrowing?
could we not be borrowing?
could you not be borrowing?
could they not be borrowing? 	could I not have borrowed?
could you not have borrowed?
could he not have borrowed?
could we not have borrowed?
could you not have borrowed?
could they not have borrowed? 	could I not have been borrowing?
could you not have been borrowing?
could he not have been borrowing?
could we not have been borrowing?
could you not have been borrowing?
could they not have been borrowing?