I may serve you may serve she may serve we may serve you may serve they may serve
V-ing form
I may be serving you may be serving she may be serving we may be serving you may be serving they may be serving
Perfect
I may have served you may have served she may have served we may have served you may have served they may have served
V-ing perfect
I may have been serving you may have been serving she may have been serving we may have been serving you may have been serving they may have been serving
Negation
Simple form
I mayn't serve you mayn't serve she mayn't serve we mayn't serve you mayn't serve they mayn't serve
V-ing form
I mayn't be serving you mayn't be serving she mayn't be serving we mayn't be serving you mayn't be serving they mayn't be serving
Perfect
I mayn't have served you mayn't have served she mayn't have served we mayn't have served you mayn't have served they mayn't have served
V-ing perfect
I mayn't have been serving you mayn't have been serving she 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
may I serve? may you serve? may she serve? may we serve? may you serve? may they serve?
V-ing form
may I be serving? may you be serving? may she be serving? may we be serving? may you be serving? may they be serving?
Perfect
may I have served? may you have served? may she have served? may we have served? may you have served? may they have served?
V-ing perfect
may I have been serving? may you have been serving? may she have been serving? may we have been serving? may you have been serving? may they have been serving?
Interro-negative form
Simple form
mayn't I serve? mayn't you serve? mayn't she serve? mayn't we serve? mayn't you serve? mayn't they serve?
V-ing form
mayn't I be serving? mayn't you be serving? mayn't she be serving? mayn't we be serving? mayn't you be serving? mayn't they be serving?
Perfect
mayn't I have served? mayn't you have served? mayn't she have served? mayn't we have served? mayn't you have served? mayn't they have served?
V-ing perfect
mayn't I have been serving? mayn't you have been serving? mayn't she have been serving? mayn't we have been serving? mayn't you have been serving? mayn't they have been serving?