I could handwrite you could handwrite he could handwrite we could handwrite you could handwrite they could handwrite
V-ing form
I could be handwriting you could be handwriting he could be handwriting we could be handwriting you could be handwriting they could be handwriting
Perfect
I could have handwritten you could have handwritten he could have handwritten we could have handwritten you could have handwritten they could have handwritten
V-ing perfect
I could have been handwriting you could have been handwriting he could have been handwriting we could have been handwriting you could have been handwriting they could have been handwriting
Negation
Simple form
I could not handwrite you could not handwrite he could not handwrite we could not handwrite you could not handwrite they could not handwrite
V-ing form
I could not be handwriting you could not be handwriting he could not be handwriting we could not be handwriting you could not be handwriting they could not be handwriting
Perfect
I could not have handwritten you could not have handwritten he could not have handwritten we could not have handwritten you could not have handwritten they could not have handwritten
V-ing perfect
I could not have been handwriting you could not have been handwriting he could not have been handwriting we could not have been handwriting you could not have been handwriting they could not have been handwriting
Interrogative form
Simple form
could I handwrite? could you handwrite? could he handwrite? could we handwrite? could you handwrite? could they handwrite?
V-ing form
could I be handwriting? could you be handwriting? could he be handwriting? could we be handwriting? could you be handwriting? could they be handwriting?
Perfect
could I have handwritten? could you have handwritten? could he have handwritten? could we have handwritten? could you have handwritten? could they have handwritten?
V-ing perfect
could I have been handwriting? could you have been handwriting? could he have been handwriting? could we have been handwriting? could you have been handwriting? could they have been handwriting?
Interro-negative form
Simple form
could I not handwrite? could you not handwrite? could he not handwrite? could we not handwrite? could you not handwrite? could they not handwrite?
V-ing form
could I not be handwriting? could you not be handwriting? could he not be handwriting? could we not be handwriting? could you not be handwriting? could they not be handwriting?
Perfect
could I not have handwritten? could you not have handwritten? could he not have handwritten? could we not have handwritten? could you not have handwritten? could they not have handwritten?
V-ing perfect
could I not have been handwriting? could you not have been handwriting? could he not have been handwriting? could we not have been handwriting? could you not have been handwriting? could they not have been handwriting?