I could deskill you could deskill he could deskill we could deskill you could deskill they could deskill
V-ing form
I could be deskilling you could be deskilling he could be deskilling we could be deskilling you could be deskilling they could be deskilling
Perfect
I could have deskilled you could have deskilled he could have deskilled we could have deskilled you could have deskilled they could have deskilled
V-ing perfect
I could have been deskilling you could have been deskilling he could have been deskilling we could have been deskilling you could have been deskilling they could have been deskilling
Negation
Simple form
I could not deskill you could not deskill he could not deskill we could not deskill you could not deskill they could not deskill
V-ing form
I could not be deskilling you could not be deskilling he could not be deskilling we could not be deskilling you could not be deskilling they could not be deskilling
Perfect
I could not have deskilled you could not have deskilled he could not have deskilled we could not have deskilled you could not have deskilled they could not have deskilled
V-ing perfect
I could not have been deskilling you could not have been deskilling he could not have been deskilling we could not have been deskilling you could not have been deskilling they could not have been deskilling
Interrogative form
Simple form
could I deskill? could you deskill? could he deskill? could we deskill? could you deskill? could they deskill?
V-ing form
could I be deskilling? could you be deskilling? could he be deskilling? could we be deskilling? could you be deskilling? could they be deskilling?
Perfect
could I have deskilled? could you have deskilled? could he have deskilled? could we have deskilled? could you have deskilled? could they have deskilled?
V-ing perfect
could I have been deskilling? could you have been deskilling? could he have been deskilling? could we have been deskilling? could you have been deskilling? could they have been deskilling?
Interro-negative form
Simple form
could I not deskill? could you not deskill? could he not deskill? could we not deskill? could you not deskill? could they not deskill?
V-ing form
could I not be deskilling? could you not be deskilling? could he not be deskilling? could we not be deskilling? could you not be deskilling? could they not be deskilling?
Perfect
could I not have deskilled? could you not have deskilled? could he not have deskilled? could we not have deskilled? could you not have deskilled? could they not have deskilled?
V-ing perfect
could I not have been deskilling? could you not have been deskilling? could he not have been deskilling? could we not have been deskilling? could you not have been deskilling? could they not have been deskilling?