I could trustee you could trustee he could trustee we could trustee you could trustee they could trustee
V-ing form
I could be trusteeing you could be trusteeing he could be trusteeing we could be trusteeing you could be trusteeing they could be trusteeing
Perfect
I could have trusteed you could have trusteed he could have trusteed we could have trusteed you could have trusteed they could have trusteed
V-ing perfect
I could have been trusteeing you could have been trusteeing he could have been trusteeing we could have been trusteeing you could have been trusteeing they could have been trusteeing
Negation
Simple form
I could not trustee you could not trustee he could not trustee we could not trustee you could not trustee they could not trustee
V-ing form
I could not be trusteeing you could not be trusteeing he could not be trusteeing we could not be trusteeing you could not be trusteeing they could not be trusteeing
Perfect
I could not have trusteed you could not have trusteed he could not have trusteed we could not have trusteed you could not have trusteed they could not have trusteed
V-ing perfect
I could not have been trusteeing you could not have been trusteeing he could not have been trusteeing we could not have been trusteeing you could not have been trusteeing they could not have been trusteeing
Interrogative form
Simple form
could I trustee? could you trustee? could he trustee? could we trustee? could you trustee? could they trustee?
V-ing form
could I be trusteeing? could you be trusteeing? could he be trusteeing? could we be trusteeing? could you be trusteeing? could they be trusteeing?
Perfect
could I have trusteed? could you have trusteed? could he have trusteed? could we have trusteed? could you have trusteed? could they have trusteed?
V-ing perfect
could I have been trusteeing? could you have been trusteeing? could he have been trusteeing? could we have been trusteeing? could you have been trusteeing? could they have been trusteeing?
Interro-negative form
Simple form
could I not trustee? could you not trustee? could he not trustee? could we not trustee? could you not trustee? could they not trustee?
V-ing form
could I not be trusteeing? could you not be trusteeing? could he not be trusteeing? could we not be trusteeing? could you not be trusteeing? could they not be trusteeing?
Perfect
could I not have trusteed? could you not have trusteed? could he not have trusteed? could we not have trusteed? could you not have trusteed? could they not have trusteed?
V-ing perfect
could I not have been trusteeing? could you not have been trusteeing? could he not have been trusteeing? could we not have been trusteeing? could you not have been trusteeing? could they not have been trusteeing?