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