I can appoint you can appoint she can appoint we can appoint you can appoint they can appoint
V-ing form
I can be appointing you can be appointing she can be appointing we can be appointing you can be appointing they can be appointing
Perfect
I can have appointed you can have appointed she can have appointed we can have appointed you can have appointed they can have appointed
V-ing perfect
I can have been appointing you can have been appointing she can have been appointing we can have been appointing you can have been appointing they can have been appointing
Negation
Simple form
I cannot appoint you cannot appoint she cannot appoint we cannot appoint you cannot appoint they cannot appoint
V-ing form
I cannot be appointing you cannot be appointing she cannot be appointing we cannot be appointing you cannot be appointing they cannot be appointing
Perfect
I cannot have appointed you cannot have appointed she cannot have appointed we cannot have appointed you cannot have appointed they cannot have appointed
V-ing perfect
I cannot have been appointing you cannot have been appointing she cannot have been appointing we cannot have been appointing you cannot have been appointing they cannot have been appointing
Interrogative form
Simple form
can I appoint? can you appoint? can she appoint? can we appoint? can you appoint? can they appoint?
V-ing form
can I be appointing? can you be appointing? can she be appointing? can we be appointing? can you be appointing? can they be appointing?
Perfect
can I have appointed? can you have appointed? can she have appointed? can we have appointed? can you have appointed? can they have appointed?
V-ing perfect
can I have been appointing? can you have been appointing? can she have been appointing? can we have been appointing? can you have been appointing? can they have been appointing?
Interro-negative form
Simple form
can I not appoint? can you not appoint? can she not appoint? can we not appoint? can you not appoint? can they not appoint?
V-ing form
can I not be appointing? can you not be appointing? can she not be appointing? can we not be appointing? can you not be appointing? can they not be appointing?
Perfect
can I not have appointed? can you not have appointed? can she not have appointed? can we not have appointed? can you not have appointed? can they not have appointed?
V-ing perfect
can I not have been appointing? can you not have been appointing? can she not have been appointing? can we not have been appointing? can you not have been appointing? can they not have been appointing?