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