I may grey you may grey she may grey we may grey you may grey they may grey
V-ing form
I may be greying you may be greying she may be greying we may be greying you may be greying they may be greying
Perfect
I may have greyed you may have greyed she may have greyed we may have greyed you may have greyed they may have greyed
V-ing perfect
I may have been greying you may have been greying she may have been greying we may have been greying you may have been greying they may have been greying
Negation
Simple form
I may not grey you may not grey she may not grey we may not grey you may not grey they may not grey
V-ing form
I may not be greying you may not be greying she may not be greying we may not be greying you may not be greying they may not be greying
Perfect
I may not have greyed you may not have greyed she may not have greyed we may not have greyed you may not have greyed they may not have greyed
V-ing perfect
I may not have been greying you may not have been greying she may not have been greying we may not have been greying you may not have been greying they may not have been greying
Interrogative form
Simple form
may I grey? may you grey? may she grey? may we grey? may you grey? may they grey?
V-ing form
may I be greying? may you be greying? may she be greying? may we be greying? may you be greying? may they be greying?
Perfect
may I have greyed? may you have greyed? may she have greyed? may we have greyed? may you have greyed? may they have greyed?
V-ing perfect
may I have been greying? may you have been greying? may she have been greying? may we have been greying? may you have been greying? may they have been greying?
Interro-negative form
Simple form
may I not grey? may you not grey? may she not grey? may we not grey? may you not grey? may they not grey?
V-ing form
may I not be greying? may you not be greying? may she not be greying? may we not be greying? may you not be greying? may they not be greying?
Perfect
may I not have greyed? may you not have greyed? may she not have greyed? may we not have greyed? may you not have greyed? may they not have greyed?
V-ing perfect
may I not have been greying? may you not have been greying? may she not have been greying? may we not have been greying? may you not have been greying? may they not have been greying?