I may biff you may biff he may biff we may biff you may biff they may biff
V-ing form
I may be biffing you may be biffing he may be biffing we may be biffing you may be biffing they may be biffing
Perfect
I may have biffed you may have biffed he may have biffed we may have biffed you may have biffed they may have biffed
V-ing perfect
I may have been biffing you may have been biffing he may have been biffing we may have been biffing you may have been biffing they may have been biffing
Negation
Simple form
I may not biff you may not biff he may not biff we may not biff you may not biff they may not biff
V-ing form
I may not be biffing you may not be biffing he may not be biffing we may not be biffing you may not be biffing they may not be biffing
Perfect
I may not have biffed you may not have biffed he may not have biffed we may not have biffed you may not have biffed they may not have biffed
V-ing perfect
I may not have been biffing you may not have been biffing he may not have been biffing we may not have been biffing you may not have been biffing they may not have been biffing
Interrogative form
Simple form
may I biff? may you biff? may he biff? may we biff? may you biff? may they biff?
V-ing form
may I be biffing? may you be biffing? may he be biffing? may we be biffing? may you be biffing? may they be biffing?
Perfect
may I have biffed? may you have biffed? may he have biffed? may we have biffed? may you have biffed? may they have biffed?
V-ing perfect
may I have been biffing? may you have been biffing? may he have been biffing? may we have been biffing? may you have been biffing? may they have been biffing?
Interro-negative form
Simple form
may I not biff? may you not biff? may he not biff? may we not biff? may you not biff? may they not biff?
V-ing form
may I not be biffing? may you not be biffing? may he not be biffing? may we not be biffing? may you not be biffing? may they not be biffing?
Perfect
may I not have biffed? may you not have biffed? may he not have biffed? may we not have biffed? may you not have biffed? may they not have biffed?
V-ing perfect
may I not have been biffing? may you not have been biffing? may he not have been biffing? may we not have been biffing? may you not have been biffing? may they not have been biffing?