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