English verb conjugation
MAY SERVE

Regular verb: serve - served - served

Affirmation

Simple form	V-ing form
I may serve you may serve he may serve we may serve you may serve they may serve	I may be serving you may be serving he may be serving we may be serving you may be serving they may be serving
Perfect	V-ing perfect
I may have served you may have served he may have served we may have served you may have served they may have served	I may have been serving you may have been serving he may have been serving we may have been serving you may have been serving they may have been serving

Negation

Simple form	V-ing form
I mayn't serve you mayn't serve he mayn't serve we mayn't serve you mayn't serve they mayn't serve	I mayn't be serving you mayn't be serving he mayn't be serving we mayn't be serving you mayn't be serving they mayn't be serving
Perfect	V-ing perfect
I mayn't have served you mayn't have served he mayn't have served we mayn't have served you mayn't have served they mayn't have served	I mayn't have been serving you mayn't have been serving he mayn't have been serving we mayn't have been serving you mayn't have been serving they mayn't have been serving

Interrogative form

Simple form	V-ing form
may I serve? may you serve? may he serve? may we serve? may you serve? may they serve?	may I be serving? may you be serving? may he be serving? may we be serving? may you be serving? may they be serving?
Perfect	V-ing perfect
may I have served? may you have served? may he have served? may we have served? may you have served? may they have served?	may I have been serving? may you have been serving? may he have been serving? may we have been serving? may you have been serving? may they have been serving?

Interro-negative form

Simple form	V-ing form
mayn't I serve? mayn't you serve? mayn't he serve? mayn't we serve? mayn't you serve? mayn't they serve?	mayn't I be serving? mayn't you be serving? mayn't he be serving? mayn't we be serving? mayn't you be serving? mayn't they be serving?
Perfect	V-ing perfect
mayn't I have served? mayn't you have served? mayn't he have served? mayn't we have served? mayn't you have served? mayn't they have served?	mayn't I have been serving? mayn't you have been serving? mayn't he have been serving? mayn't we have been serving? mayn't you have been serving? mayn't they have been serving?