I may appall you may appall he may appall we may appall you may appall they may appall
V-ing form
I may be appalling you may be appalling he may be appalling we may be appalling you may be appalling they may be appalling
Perfect
I may have appalled you may have appalled he may have appalled we may have appalled you may have appalled they may have appalled
V-ing perfect
I may have been appalling you may have been appalling he may have been appalling we may have been appalling you may have been appalling they may have been appalling
Negation
Simple form
I may not appall you may not appall he may not appall we may not appall you may not appall they may not appall
V-ing form
I may not be appalling you may not be appalling he may not be appalling we may not be appalling you may not be appalling they may not be appalling
Perfect
I may not have appalled you may not have appalled he may not have appalled we may not have appalled you may not have appalled they may not have appalled
V-ing perfect
I may not have been appalling you may not have been appalling he may not have been appalling we may not have been appalling you may not have been appalling they may not have been appalling
Interrogative form
Simple form
may I appall? may you appall? may he appall? may we appall? may you appall? may they appall?
V-ing form
may I be appalling? may you be appalling? may he be appalling? may we be appalling? may you be appalling? may they be appalling?
Perfect
may I have appalled? may you have appalled? may he have appalled? may we have appalled? may you have appalled? may they have appalled?
V-ing perfect
may I have been appalling? may you have been appalling? may he have been appalling? may we have been appalling? may you have been appalling? may they have been appalling?
Interro-negative form
Simple form
may I not appall? may you not appall? may he not appall? may we not appall? may you not appall? may they not appall?
V-ing form
may I not be appalling? may you not be appalling? may he not be appalling? may we not be appalling? may you not be appalling? may they not be appalling?
Perfect
may I not have appalled? may you not have appalled? may he not have appalled? may we not have appalled? may you not have appalled? may they not have appalled?
V-ing perfect
may I not have been appalling? may you not have been appalling? may he not have been appalling? may we not have been appalling? may you not have been appalling? may they not have been appalling?