I may billow you may billow she may billow we may billow you may billow they may billow
V-ing form
I may be billowing you may be billowing she may be billowing we may be billowing you may be billowing they may be billowing
Perfect
I may have billowed you may have billowed she 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 she 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 she 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 she 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 she 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 she 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 she billow? may we billow? may you billow? may they billow?
V-ing form
may I be billowing? may you be billowing? may she be billowing? may we be billowing? may you be billowing? may they be billowing?
Perfect
may I have billowed? may you have billowed? may she 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 she 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 she 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 she 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 she 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 she have been billowing? mayn't we have been billowing? mayn't you have been billowing? mayn't they have been billowing?