I could apprise you could apprise she could apprise we could apprise you could apprise they could apprise
V-ing form
I could be apprising you could be apprising she could be apprising we could be apprising you could be apprising they could be apprising
Perfect
I could have apprised you could have apprised she could have apprised we could have apprised you could have apprised they could have apprised
V-ing perfect
I could have been apprising you could have been apprising she could have been apprising we could have been apprising you could have been apprising they could have been apprising
Negation
Simple form
I could not apprise you could not apprise she could not apprise we could not apprise you could not apprise they could not apprise
V-ing form
I could not be apprising you could not be apprising she could not be apprising we could not be apprising you could not be apprising they could not be apprising
Perfect
I could not have apprised you could not have apprised she could not have apprised we could not have apprised you could not have apprised they could not have apprised
V-ing perfect
I could not have been apprising you could not have been apprising she could not have been apprising we could not have been apprising you could not have been apprising they could not have been apprising
Interrogative form
Simple form
could I apprise? could you apprise? could she apprise? could we apprise? could you apprise? could they apprise?
V-ing form
could I be apprising? could you be apprising? could she be apprising? could we be apprising? could you be apprising? could they be apprising?
Perfect
could I have apprised? could you have apprised? could she have apprised? could we have apprised? could you have apprised? could they have apprised?
V-ing perfect
could I have been apprising? could you have been apprising? could she have been apprising? could we have been apprising? could you have been apprising? could they have been apprising?
Interro-negative form
Simple form
could I not apprise? could you not apprise? could she not apprise? could we not apprise? could you not apprise? could they not apprise?
V-ing form
could I not be apprising? could you not be apprising? could she not be apprising? could we not be apprising? could you not be apprising? could they not be apprising?
Perfect
could I not have apprised? could you not have apprised? could she not have apprised? could we not have apprised? could you not have apprised? could they not have apprised?
V-ing perfect
could I not have been apprising? could you not have been apprising? could she not have been apprising? could we not have been apprising? could you not have been apprising? could they not have been apprising?