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