I may gross you may gross she may gross we may gross you may gross they may gross
V-ing form
I may be grossing you may be grossing she may be grossing we may be grossing you may be grossing they may be grossing
Perfect
I may have grossed you may have grossed she may have grossed we may have grossed you may have grossed they may have grossed
V-ing perfect
I may have been grossing you may have been grossing she may have been grossing we may have been grossing you may have been grossing they may have been grossing
Negation
Simple form
I mayn't gross you mayn't gross she mayn't gross we mayn't gross you mayn't gross they mayn't gross
V-ing form
I mayn't be grossing you mayn't be grossing she mayn't be grossing we mayn't be grossing you mayn't be grossing they mayn't be grossing
Perfect
I mayn't have grossed you mayn't have grossed she mayn't have grossed we mayn't have grossed you mayn't have grossed they mayn't have grossed
V-ing perfect
I mayn't have been grossing you mayn't have been grossing she mayn't have been grossing we mayn't have been grossing you mayn't have been grossing they mayn't have been grossing
Interrogative form
Simple form
may I gross? may you gross? may she gross? may we gross? may you gross? may they gross?
V-ing form
may I be grossing? may you be grossing? may she be grossing? may we be grossing? may you be grossing? may they be grossing?
Perfect
may I have grossed? may you have grossed? may she have grossed? may we have grossed? may you have grossed? may they have grossed?
V-ing perfect
may I have been grossing? may you have been grossing? may she have been grossing? may we have been grossing? may you have been grossing? may they have been grossing?
Interro-negative form
Simple form
mayn't I gross? mayn't you gross? mayn't she gross? mayn't we gross? mayn't you gross? mayn't they gross?
V-ing form
mayn't I be grossing? mayn't you be grossing? mayn't she be grossing? mayn't we be grossing? mayn't you be grossing? mayn't they be grossing?
Perfect
mayn't I have grossed? mayn't you have grossed? mayn't she have grossed? mayn't we have grossed? mayn't you have grossed? mayn't they have grossed?
V-ing perfect
mayn't I have been grossing? mayn't you have been grossing? mayn't she have been grossing? mayn't we have been grossing? mayn't you have been grossing? mayn't they have been grossing?