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