I may stand you may stand he may stand we may stand you may stand they may stand
V-ing form
I may be standing you may be standing he may be standing we may be standing you may be standing they may be standing
Perfect
I may have stood you may have stood he may have stood we may have stood you may have stood they may have stood
V-ing perfect
I may have been standing you may have been standing he may have been standing we may have been standing you may have been standing they may have been standing
Negation
Simple form
I may not stand you may not stand he may not stand we may not stand you may not stand they may not stand
V-ing form
I may not be standing you may not be standing he may not be standing we may not be standing you may not be standing they may not be standing
Perfect
I may not have stood you may not have stood he may not have stood we may not have stood you may not have stood they may not have stood
V-ing perfect
I may not have been standing you may not have been standing he may not have been standing we may not have been standing you may not have been standing they may not have been standing
Interrogative form
Simple form
may I stand? may you stand? may he stand? may we stand? may you stand? may they stand?
V-ing form
may I be standing? may you be standing? may he be standing? may we be standing? may you be standing? may they be standing?
Perfect
may I have stood? may you have stood? may he have stood? may we have stood? may you have stood? may they have stood?
V-ing perfect
may I have been standing? may you have been standing? may he have been standing? may we have been standing? may you have been standing? may they have been standing?
Interro-negative form
Simple form
may I not stand? may you not stand? may he not stand? may we not stand? may you not stand? may they not stand?
V-ing form
may I not be standing? may you not be standing? may he not be standing? may we not be standing? may you not be standing? may they not be standing?
Perfect
may I not have stood? may you not have stood? may he not have stood? may we not have stood? may you not have stood? may they not have stood?
V-ing perfect
may I not have been standing? may you not have been standing? may he not have been standing? may we not have been standing? may you not have been standing? may they not have been standing?