I may muss you may muss she may muss we may muss you may muss they may muss
V-ing form
I may be mussing you may be mussing she may be mussing we may be mussing you may be mussing they may be mussing
Perfect
I may have mussed you may have mussed she may have mussed we may have mussed you may have mussed they may have mussed
V-ing perfect
I may have been mussing you may have been mussing she may have been mussing we may have been mussing you may have been mussing they may have been mussing
Negation
Simple form
I may not muss you may not muss she may not muss we may not muss you may not muss they may not muss
V-ing form
I may not be mussing you may not be mussing she may not be mussing we may not be mussing you may not be mussing they may not be mussing
Perfect
I may not have mussed you may not have mussed she may not have mussed we may not have mussed you may not have mussed they may not have mussed
V-ing perfect
I may not have been mussing you may not have been mussing she may not have been mussing we may not have been mussing you may not have been mussing they may not have been mussing
Interrogative form
Simple form
may I muss? may you muss? may she muss? may we muss? may you muss? may they muss?
V-ing form
may I be mussing? may you be mussing? may she be mussing? may we be mussing? may you be mussing? may they be mussing?
Perfect
may I have mussed? may you have mussed? may she have mussed? may we have mussed? may you have mussed? may they have mussed?
V-ing perfect
may I have been mussing? may you have been mussing? may she have been mussing? may we have been mussing? may you have been mussing? may they have been mussing?
Interro-negative form
Simple form
may I not muss? may you not muss? may she not muss? may we not muss? may you not muss? may they not muss?
V-ing form
may I not be mussing? may you not be mussing? may she not be mussing? may we not be mussing? may you not be mussing? may they not be mussing?
Perfect
may I not have mussed? may you not have mussed? may she not have mussed? may we not have mussed? may you not have mussed? may they not have mussed?
V-ing perfect
may I not have been mussing? may you not have been mussing? may she not have been mussing? may we not have been mussing? may you not have been mussing? may they not have been mussing?