I could write-protect you could write-protect he could write-protect we could write-protect you could write-protect they could write-protect
V-ing form
I could be write-protecting you could be write-protecting he could be write-protecting we could be write-protecting you could be write-protecting they could be write-protecting
Perfect
I could have write-protected you could have write-protected he could have write-protected we could have write-protected you could have write-protected they could have write-protected
V-ing perfect
I could have been write-protecting you could have been write-protecting he could have been write-protecting we could have been write-protecting you could have been write-protecting they could have been write-protecting
Negation
Simple form
I could not write-protect you could not write-protect he could not write-protect we could not write-protect you could not write-protect they could not write-protect
V-ing form
I could not be write-protecting you could not be write-protecting he could not be write-protecting we could not be write-protecting you could not be write-protecting they could not be write-protecting
Perfect
I could not have write-protected you could not have write-protected he could not have write-protected we could not have write-protected you could not have write-protected they could not have write-protected
V-ing perfect
I could not have been write-protecting you could not have been write-protecting he could not have been write-protecting we could not have been write-protecting you could not have been write-protecting they could not have been write-protecting
Interrogative form
Simple form
could I write-protect? could you write-protect? could he write-protect? could we write-protect? could you write-protect? could they write-protect?
V-ing form
could I be write-protecting? could you be write-protecting? could he be write-protecting? could we be write-protecting? could you be write-protecting? could they be write-protecting?
Perfect
could I have write-protected? could you have write-protected? could he have write-protected? could we have write-protected? could you have write-protected? could they have write-protected?
V-ing perfect
could I have been write-protecting? could you have been write-protecting? could he have been write-protecting? could we have been write-protecting? could you have been write-protecting? could they have been write-protecting?
Interro-negative form
Simple form
could I not write-protect? could you not write-protect? could he not write-protect? could we not write-protect? could you not write-protect? could they not write-protect?
V-ing form
could I not be write-protecting? could you not be write-protecting? could he not be write-protecting? could we not be write-protecting? could you not be write-protecting? could they not be write-protecting?
Perfect
could I not have write-protected? could you not have write-protected? could he not have write-protected? could we not have write-protected? could you not have write-protected? could they not have write-protected?
V-ing perfect
could I not have been write-protecting? could you not have been write-protecting? could he not have been write-protecting? could we not have been write-protecting? could you not have been write-protecting? could they not have been write-protecting?