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