I could copyread you could copyread he could copyread we could copyread you could copyread they could copyread
V-ing form
I could be copyreading you could be copyreading he could be copyreading we could be copyreading you could be copyreading they could be copyreading
Perfect
I could have copyread you could have copyread he could have copyread we could have copyread you could have copyread they could have copyread
V-ing perfect
I could have been copyreading you could have been copyreading he could have been copyreading we could have been copyreading you could have been copyreading they could have been copyreading
Negation
Simple form
I could not copyread you could not copyread he could not copyread we could not copyread you could not copyread they could not copyread
V-ing form
I could not be copyreading you could not be copyreading he could not be copyreading we could not be copyreading you could not be copyreading they could not be copyreading
Perfect
I could not have copyread you could not have copyread he could not have copyread we could not have copyread you could not have copyread they could not have copyread
V-ing perfect
I could not have been copyreading you could not have been copyreading he could not have been copyreading we could not have been copyreading you could not have been copyreading they could not have been copyreading
Interrogative form
Simple form
could I copyread? could you copyread? could he copyread? could we copyread? could you copyread? could they copyread?
V-ing form
could I be copyreading? could you be copyreading? could he be copyreading? could we be copyreading? could you be copyreading? could they be copyreading?
Perfect
could I have copyread? could you have copyread? could he have copyread? could we have copyread? could you have copyread? could they have copyread?
V-ing perfect
could I have been copyreading? could you have been copyreading? could he have been copyreading? could we have been copyreading? could you have been copyreading? could they have been copyreading?
Interro-negative form
Simple form
could I not copyread? could you not copyread? could he not copyread? could we not copyread? could you not copyread? could they not copyread?
V-ing form
could I not be copyreading? could you not be copyreading? could he not be copyreading? could we not be copyreading? could you not be copyreading? could they not be copyreading?
Perfect
could I not have copyread? could you not have copyread? could he not have copyread? could we not have copyread? could you not have copyread? could they not have copyread?
V-ing perfect
could I not have been copyreading? could you not have been copyreading? could he not have been copyreading? could we not have been copyreading? could you not have been copyreading? could they not have been copyreading?