I may change you may change she may change we may change you may change they may change
V-ing form
I may be changing you may be changing she may be changing we may be changing you may be changing they may be changing
Perfect
I may have changed you may have changed she may have changed we may have changed you may have changed they may have changed
V-ing perfect
I may have been changing you may have been changing she may have been changing we may have been changing you may have been changing they may have been changing
Negation
Simple form
I may not change you may not change she may not change we may not change you may not change they may not change
V-ing form
I may not be changing you may not be changing she may not be changing we may not be changing you may not be changing they may not be changing
Perfect
I may not have changed you may not have changed she may not have changed we may not have changed you may not have changed they may not have changed
V-ing perfect
I may not have been changing you may not have been changing she may not have been changing we may not have been changing you may not have been changing they may not have been changing
Interrogative form
Simple form
may I change? may you change? may she change? may we change? may you change? may they change?
V-ing form
may I be changing? may you be changing? may she be changing? may we be changing? may you be changing? may they be changing?
Perfect
may I have changed? may you have changed? may she have changed? may we have changed? may you have changed? may they have changed?
V-ing perfect
may I have been changing? may you have been changing? may she have been changing? may we have been changing? may you have been changing? may they have been changing?
Interro-negative form
Simple form
may I not change? may you not change? may she not change? may we not change? may you not change? may they not change?
V-ing form
may I not be changing? may you not be changing? may she not be changing? may we not be changing? may you not be changing? may they not be changing?
Perfect
may I not have changed? may you not have changed? may she not have changed? may we not have changed? may you not have changed? may they not have changed?
V-ing perfect
may I not have been changing? may you not have been changing? may she not have been changing? may we not have been changing? may you not have been changing? may they not have been changing?