I could essay you could essay he could essay we could essay you could essay they could essay
V-ing form
I could be essaying you could be essaying he could be essaying we could be essaying you could be essaying they could be essaying
Perfect
I could have essayed you could have essayed he could have essayed we could have essayed you could have essayed they could have essayed
V-ing perfect
I could have been essaying you could have been essaying he could have been essaying we could have been essaying you could have been essaying they could have been essaying
Negation
Simple form
I could not essay you could not essay he could not essay we could not essay you could not essay they could not essay
V-ing form
I could not be essaying you could not be essaying he could not be essaying we could not be essaying you could not be essaying they could not be essaying
Perfect
I could not have essayed you could not have essayed he could not have essayed we could not have essayed you could not have essayed they could not have essayed
V-ing perfect
I could not have been essaying you could not have been essaying he could not have been essaying we could not have been essaying you could not have been essaying they could not have been essaying
Interrogative form
Simple form
could I essay? could you essay? could he essay? could we essay? could you essay? could they essay?
V-ing form
could I be essaying? could you be essaying? could he be essaying? could we be essaying? could you be essaying? could they be essaying?
Perfect
could I have essayed? could you have essayed? could he have essayed? could we have essayed? could you have essayed? could they have essayed?
V-ing perfect
could I have been essaying? could you have been essaying? could he have been essaying? could we have been essaying? could you have been essaying? could they have been essaying?
Interro-negative form
Simple form
could I not essay? could you not essay? could he not essay? could we not essay? could you not essay? could they not essay?
V-ing form
could I not be essaying? could you not be essaying? could he not be essaying? could we not be essaying? could you not be essaying? could they not be essaying?
Perfect
could I not have essayed? could you not have essayed? could he not have essayed? could we not have essayed? could you not have essayed? could they not have essayed?
V-ing perfect
could I not have been essaying? could you not have been essaying? could he not have been essaying? could we not have been essaying? could you not have been essaying? could they not have been essaying?