I may brush you may brush he may brush we may brush you may brush they may brush
V-ing form
I may be brushing you may be brushing he may be brushing we may be brushing you may be brushing they may be brushing
Perfect
I may have brushed you may have brushed he may have brushed we may have brushed you may have brushed they may have brushed
V-ing perfect
I may have been brushing you may have been brushing he may have been brushing we may have been brushing you may have been brushing they may have been brushing
Negation
Simple form
I may not brush you may not brush he may not brush we may not brush you may not brush they may not brush
V-ing form
I may not be brushing you may not be brushing he may not be brushing we may not be brushing you may not be brushing they may not be brushing
Perfect
I may not have brushed you may not have brushed he may not have brushed we may not have brushed you may not have brushed they may not have brushed
V-ing perfect
I may not have been brushing you may not have been brushing he may not have been brushing we may not have been brushing you may not have been brushing they may not have been brushing
Interrogative form
Simple form
may I brush? may you brush? may he brush? may we brush? may you brush? may they brush?
V-ing form
may I be brushing? may you be brushing? may he be brushing? may we be brushing? may you be brushing? may they be brushing?
Perfect
may I have brushed? may you have brushed? may he have brushed? may we have brushed? may you have brushed? may they have brushed?
V-ing perfect
may I have been brushing? may you have been brushing? may he have been brushing? may we have been brushing? may you have been brushing? may they have been brushing?
Interro-negative form
Simple form
may I not brush? may you not brush? may he not brush? may we not brush? may you not brush? may they not brush?
V-ing form
may I not be brushing? may you not be brushing? may he not be brushing? may we not be brushing? may you not be brushing? may they not be brushing?
Perfect
may I not have brushed? may you not have brushed? may he not have brushed? may we not have brushed? may you not have brushed? may they not have brushed?
V-ing perfect
may I not have been brushing? may you not have been brushing? may he not have been brushing? may we not have been brushing? may you not have been brushing? may they not have been brushing?