I may gross you may gross he may gross we may gross you may gross they may gross
V-ing form
I may be grossing you may be grossing he may be grossing we may be grossing you may be grossing they may be grossing
Perfect
I may have grossed you may have grossed he 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 he may have been grossing we may have been grossing you may have been grossing they may have been grossing
Negation
Simple form
I may not gross you may not gross he may not gross we may not gross you may not gross they may not gross
V-ing form
I may not be grossing you may not be grossing he may not be grossing we may not be grossing you may not be grossing they may not be grossing
Perfect
I may not have grossed you may not have grossed he may not have grossed we may not have grossed you may not have grossed they may not have grossed
V-ing perfect
I may not have been grossing you may not have been grossing he may not have been grossing we may not have been grossing you may not have been grossing they may not have been grossing
Interrogative form
Simple form
may I gross? may you gross? may he gross? may we gross? may you gross? may they gross?
V-ing form
may I be grossing? may you be grossing? may he be grossing? may we be grossing? may you be grossing? may they be grossing?
Perfect
may I have grossed? may you have grossed? may he 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 he have been grossing? may we have been grossing? may you have been grossing? may they have been grossing?
Interro-negative form
Simple form
may I not gross? may you not gross? may he not gross? may we not gross? may you not gross? may they not gross?
V-ing form
may I not be grossing? may you not be grossing? may he not be grossing? may we not be grossing? may you not be grossing? may they not be grossing?
Perfect
may I not have grossed? may you not have grossed? may he not have grossed? may we not have grossed? may you not have grossed? may they not have grossed?
V-ing perfect
may I not have been grossing? may you not have been grossing? may he not have been grossing? may we not have been grossing? may you not have been grossing? may they not have been grossing?