I may moss you may moss she may moss we may moss you may moss they may moss
V-ing form
I may be mossing you may be mossing she may be mossing we may be mossing you may be mossing they may be mossing
Perfect
I may have mossed you may have mossed she may have mossed we may have mossed you may have mossed they may have mossed
V-ing perfect
I may have been mossing you may have been mossing she may have been mossing we may have been mossing you may have been mossing they may have been mossing
Negation
Simple form
I may not moss you may not moss she may not moss we may not moss you may not moss they may not moss
V-ing form
I may not be mossing you may not be mossing she may not be mossing we may not be mossing you may not be mossing they may not be mossing
Perfect
I may not have mossed you may not have mossed she may not have mossed we may not have mossed you may not have mossed they may not have mossed
V-ing perfect
I may not have been mossing you may not have been mossing she may not have been mossing we may not have been mossing you may not have been mossing they may not have been mossing
Interrogative form
Simple form
may I moss? may you moss? may she moss? may we moss? may you moss? may they moss?
V-ing form
may I be mossing? may you be mossing? may she be mossing? may we be mossing? may you be mossing? may they be mossing?
Perfect
may I have mossed? may you have mossed? may she have mossed? may we have mossed? may you have mossed? may they have mossed?
V-ing perfect
may I have been mossing? may you have been mossing? may she have been mossing? may we have been mossing? may you have been mossing? may they have been mossing?
Interro-negative form
Simple form
may I not moss? may you not moss? may she not moss? may we not moss? may you not moss? may they not moss?
V-ing form
may I not be mossing? may you not be mossing? may she not be mossing? may we not be mossing? may you not be mossing? may they not be mossing?
Perfect
may I not have mossed? may you not have mossed? may she not have mossed? may we not have mossed? may you not have mossed? may they not have mossed?
V-ing perfect
may I not have been mossing? may you not have been mossing? may she not have been mossing? may we not have been mossing? may you not have been mossing? may they not have been mossing?