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 couldn't copyread you couldn't copyread he couldn't copyread we couldn't copyread you couldn't copyread they couldn't copyread
V-ing form
I couldn't be copyreading you couldn't be copyreading he couldn't be copyreading we couldn't be copyreading you couldn't be copyreading they couldn't be copyreading
Perfect
I couldn't have copyread you couldn't have copyread he couldn't have copyread we couldn't have copyread you couldn't have copyread they couldn't have copyread
V-ing perfect
I couldn't have been copyreading you couldn't have been copyreading he couldn't have been copyreading we couldn't have been copyreading you couldn't have been copyreading they couldn't 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
couldn't I copyread? couldn't you copyread? couldn't he copyread? couldn't we copyread? couldn't you copyread? couldn't they copyread?
V-ing form
couldn't I be copyreading? couldn't you be copyreading? couldn't he be copyreading? couldn't we be copyreading? couldn't you be copyreading? couldn't they be copyreading?
Perfect
couldn't I have copyread? couldn't you have copyread? couldn't he have copyread? couldn't we have copyread? couldn't you have copyread? couldn't they have copyread?
V-ing perfect
couldn't I have been copyreading? couldn't you have been copyreading? couldn't he have been copyreading? couldn't we have been copyreading? couldn't you have been copyreading? couldn't they have been copyreading?