English verb conjugation
MAY DEMONSTRATE

Regular verb: demonstrate - demonstrated - demonstrated

Affirmation

Simple form	V-ing form
I may demonstrate you may demonstrate he may demonstrate we may demonstrate you may demonstrate they may demonstrate	I may be demonstrating you may be demonstrating he may be demonstrating we may be demonstrating you may be demonstrating they may be demonstrating
Perfect	V-ing perfect
I may have demonstrated you may have demonstrated he may have demonstrated we may have demonstrated you may have demonstrated they may have demonstrated	I may have been demonstrating you may have been demonstrating he may have been demonstrating we may have been demonstrating you may have been demonstrating they may have been demonstrating

Negation

Simple form	V-ing form
I mayn't demonstrate you mayn't demonstrate he mayn't demonstrate we mayn't demonstrate you mayn't demonstrate they mayn't demonstrate	I mayn't be demonstrating you mayn't be demonstrating he mayn't be demonstrating we mayn't be demonstrating you mayn't be demonstrating they mayn't be demonstrating
Perfect	V-ing perfect
I mayn't have demonstrated you mayn't have demonstrated he mayn't have demonstrated we mayn't have demonstrated you mayn't have demonstrated they mayn't have demonstrated	I mayn't have been demonstrating you mayn't have been demonstrating he mayn't have been demonstrating we mayn't have been demonstrating you mayn't have been demonstrating they mayn't have been demonstrating

Interrogative form

Simple form	V-ing form
may I demonstrate? may you demonstrate? may he demonstrate? may we demonstrate? may you demonstrate? may they demonstrate?	may I be demonstrating? may you be demonstrating? may he be demonstrating? may we be demonstrating? may you be demonstrating? may they be demonstrating?
Perfect	V-ing perfect
may I have demonstrated? may you have demonstrated? may he have demonstrated? may we have demonstrated? may you have demonstrated? may they have demonstrated?	may I have been demonstrating? may you have been demonstrating? may he have been demonstrating? may we have been demonstrating? may you have been demonstrating? may they have been demonstrating?

Interro-negative form

Simple form	V-ing form
mayn't I demonstrate? mayn't you demonstrate? mayn't he demonstrate? mayn't we demonstrate? mayn't you demonstrate? mayn't they demonstrate?	mayn't I be demonstrating? mayn't you be demonstrating? mayn't he be demonstrating? mayn't we be demonstrating? mayn't you be demonstrating? mayn't they be demonstrating?
Perfect	V-ing perfect
mayn't I have demonstrated? mayn't you have demonstrated? mayn't he have demonstrated? mayn't we have demonstrated? mayn't you have demonstrated? mayn't they have demonstrated?	mayn't I have been demonstrating? mayn't you have been demonstrating? mayn't he have been demonstrating? mayn't we have been demonstrating? mayn't you have been demonstrating? mayn't they have been demonstrating?