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 couldn't trustee you couldn't trustee he couldn't trustee we couldn't trustee you couldn't trustee they couldn't trustee
V-ing form
I couldn't be trusteeing you couldn't be trusteeing he couldn't be trusteeing we couldn't be trusteeing you couldn't be trusteeing they couldn't be trusteeing
Perfect
I couldn't have trusteed you couldn't have trusteed he couldn't have trusteed we couldn't have trusteed you couldn't have trusteed they couldn't have trusteed
V-ing perfect
I couldn't have been trusteeing you couldn't have been trusteeing he couldn't have been trusteeing we couldn't have been trusteeing you couldn't have been trusteeing they couldn't 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
couldn't I trustee? couldn't you trustee? couldn't he trustee? couldn't we trustee? couldn't you trustee? couldn't they trustee?
V-ing form
couldn't I be trusteeing? couldn't you be trusteeing? couldn't he be trusteeing? couldn't we be trusteeing? couldn't you be trusteeing? couldn't they be trusteeing?
Perfect
couldn't I have trusteed? couldn't you have trusteed? couldn't he have trusteed? couldn't we have trusteed? couldn't you have trusteed? couldn't they have trusteed?
V-ing perfect
couldn't I have been trusteeing? couldn't you have been trusteeing? couldn't he have been trusteeing? couldn't we have been trusteeing? couldn't you have been trusteeing? couldn't they have been trusteeing?