I may sit you may sit she may sit we may sit you may sit they may sit
V-ing form
I may be sitting you may be sitting she may be sitting we may be sitting you may be sitting they may be sitting
Perfect
I may have sat you may have sat she may have sat we may have sat you may have sat they may have sat
V-ing perfect
I may have been sitting you may have been sitting she may have been sitting we may have been sitting you may have been sitting they may have been sitting
Negation
Simple form
I may not sit you may not sit she may not sit we may not sit you may not sit they may not sit
V-ing form
I may not be sitting you may not be sitting she may not be sitting we may not be sitting you may not be sitting they may not be sitting
Perfect
I may not have sat you may not have sat she may not have sat we may not have sat you may not have sat they may not have sat
V-ing perfect
I may not have been sitting you may not have been sitting she may not have been sitting we may not have been sitting you may not have been sitting they may not have been sitting
Interrogative form
Simple form
may I sit? may you sit? may she sit? may we sit? may you sit? may they sit?
V-ing form
may I be sitting? may you be sitting? may she be sitting? may we be sitting? may you be sitting? may they be sitting?
Perfect
may I have sat? may you have sat? may she have sat? may we have sat? may you have sat? may they have sat?
V-ing perfect
may I have been sitting? may you have been sitting? may she have been sitting? may we have been sitting? may you have been sitting? may they have been sitting?
Interro-negative form
Simple form
may I not sit? may you not sit? may she not sit? may we not sit? may you not sit? may they not sit?
V-ing form
may I not be sitting? may you not be sitting? may she not be sitting? may we not be sitting? may you not be sitting? may they not be sitting?
Perfect
may I not have sat? may you not have sat? may she not have sat? may we not have sat? may you not have sat? may they not have sat?
V-ing perfect
may I not have been sitting? may you not have been sitting? may she not have been sitting? may we not have been sitting? may you not have been sitting? may they not have been sitting?