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