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 couldn't handwrite you couldn't handwrite he couldn't handwrite we couldn't handwrite you couldn't handwrite they couldn't handwrite
V-ing form
I couldn't be handwriting you couldn't be handwriting he couldn't be handwriting we couldn't be handwriting you couldn't be handwriting they couldn't be handwriting
Perfect
I couldn't have handwritten you couldn't have handwritten he couldn't have handwritten we couldn't have handwritten you couldn't have handwritten they couldn't have handwritten
V-ing perfect
I couldn't have been handwriting you couldn't have been handwriting he couldn't have been handwriting we couldn't have been handwriting you couldn't have been handwriting they couldn't 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
couldn't I handwrite? couldn't you handwrite? couldn't he handwrite? couldn't we handwrite? couldn't you handwrite? couldn't they handwrite?
V-ing form
couldn't I be handwriting? couldn't you be handwriting? couldn't he be handwriting? couldn't we be handwriting? couldn't you be handwriting? couldn't they be handwriting?
Perfect
couldn't I have handwritten? couldn't you have handwritten? couldn't he have handwritten? couldn't we have handwritten? couldn't you have handwritten? couldn't they have handwritten?
V-ing perfect
couldn't I have been handwriting? couldn't you have been handwriting? couldn't he have been handwriting? couldn't we have been handwriting? couldn't you have been handwriting? couldn't they have been handwriting?