I could rewrite you could rewrite he could rewrite we could rewrite you could rewrite they could rewrite
V-ing form
I could be rewriting you could be rewriting he could be rewriting we could be rewriting you could be rewriting they could be rewriting
Perfect
I could have rewritten you could have rewritten he could have rewritten we could have rewritten you could have rewritten they could have rewritten
V-ing perfect
I could have been rewriting you could have been rewriting he could have been rewriting we could have been rewriting you could have been rewriting they could have been rewriting
Negation
Simple form
I could not rewrite you could not rewrite he could not rewrite we could not rewrite you could not rewrite they could not rewrite
V-ing form
I could not be rewriting you could not be rewriting he could not be rewriting we could not be rewriting you could not be rewriting they could not be rewriting
Perfect
I could not have rewritten you could not have rewritten he could not have rewritten we could not have rewritten you could not have rewritten they could not have rewritten
V-ing perfect
I could not have been rewriting you could not have been rewriting he could not have been rewriting we could not have been rewriting you could not have been rewriting they could not have been rewriting
Interrogative form
Simple form
could I rewrite? could you rewrite? could he rewrite? could we rewrite? could you rewrite? could they rewrite?
V-ing form
could I be rewriting? could you be rewriting? could he be rewriting? could we be rewriting? could you be rewriting? could they be rewriting?
Perfect
could I have rewritten? could you have rewritten? could he have rewritten? could we have rewritten? could you have rewritten? could they have rewritten?
V-ing perfect
could I have been rewriting? could you have been rewriting? could he have been rewriting? could we have been rewriting? could you have been rewriting? could they have been rewriting?
Interro-negative form
Simple form
could I not rewrite? could you not rewrite? could he not rewrite? could we not rewrite? could you not rewrite? could they not rewrite?
V-ing form
could I not be rewriting? could you not be rewriting? could he not be rewriting? could we not be rewriting? could you not be rewriting? could they not be rewriting?
Perfect
could I not have rewritten? could you not have rewritten? could he not have rewritten? could we not have rewritten? could you not have rewritten? could they not have rewritten?
V-ing perfect
could I not have been rewriting? could you not have been rewriting? could he not have been rewriting? could we not have been rewriting? could you not have been rewriting? could they not have been rewriting?