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