I may change you may change he may change we may change you may change they may change
V-ing form
I may be changing you may be changing he may be changing we may be changing you may be changing they may be changing
Perfect
I may have changed you may have changed he 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 he may have been changing we may have been changing you may have been changing they may have been changing
Negation
Simple form
I mayn't change you mayn't change he mayn't change we mayn't change you mayn't change they mayn't change
V-ing form
I mayn't be changing you mayn't be changing he mayn't be changing we mayn't be changing you mayn't be changing they mayn't be changing
Perfect
I mayn't have changed you mayn't have changed he mayn't have changed we mayn't have changed you mayn't have changed they mayn't have changed
V-ing perfect
I mayn't have been changing you mayn't have been changing he mayn't have been changing we mayn't have been changing you mayn't have been changing they mayn't have been changing
Interrogative form
Simple form
may I change? may you change? may he change? may we change? may you change? may they change?
V-ing form
may I be changing? may you be changing? may he be changing? may we be changing? may you be changing? may they be changing?
Perfect
may I have changed? may you have changed? may he 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 he have been changing? may we have been changing? may you have been changing? may they have been changing?
Interro-negative form
Simple form
mayn't I change? mayn't you change? mayn't he change? mayn't we change? mayn't you change? mayn't they change?
V-ing form
mayn't I be changing? mayn't you be changing? mayn't he be changing? mayn't we be changing? mayn't you be changing? mayn't they be changing?
Perfect
mayn't I have changed? mayn't you have changed? mayn't he have changed? mayn't we have changed? mayn't you have changed? mayn't they have changed?
V-ing perfect
mayn't I have been changing? mayn't you have been changing? mayn't he have been changing? mayn't we have been changing? mayn't you have been changing? mayn't they have been changing?