I could bring you could bring she could bring we could bring you could bring they could bring
V-ing form
I could be bringing you could be bringing she could be bringing we could be bringing you could be bringing they could be bringing
Perfect
I could have brought you could have brought she could have brought we could have brought you could have brought they could have brought
V-ing perfect
I could have been bringing you could have been bringing she could have been bringing we could have been bringing you could have been bringing they could have been bringing
Negation
Simple form
I could not bring you could not bring she could not bring we could not bring you could not bring they could not bring
V-ing form
I could not be bringing you could not be bringing she could not be bringing we could not be bringing you could not be bringing they could not be bringing
Perfect
I could not have brought you could not have brought she could not have brought we could not have brought you could not have brought they could not have brought
V-ing perfect
I could not have been bringing you could not have been bringing she could not have been bringing we could not have been bringing you could not have been bringing they could not have been bringing
Interrogative form
Simple form
could I bring? could you bring? could she bring? could we bring? could you bring? could they bring?
V-ing form
could I be bringing? could you be bringing? could she be bringing? could we be bringing? could you be bringing? could they be bringing?
Perfect
could I have brought? could you have brought? could she have brought? could we have brought? could you have brought? could they have brought?
V-ing perfect
could I have been bringing? could you have been bringing? could she have been bringing? could we have been bringing? could you have been bringing? could they have been bringing?
Interro-negative form
Simple form
could I not bring? could you not bring? could she not bring? could we not bring? could you not bring? could they not bring?
V-ing form
could I not be bringing? could you not be bringing? could she not be bringing? could we not be bringing? could you not be bringing? could they not be bringing?
Perfect
could I not have brought? could you not have brought? could she not have brought? could we not have brought? could you not have brought? could they not have brought?
V-ing perfect
could I not have been bringing? could you not have been bringing? could she not have been bringing? could we not have been bringing? could you not have been bringing? could they not have been bringing?