I may birth you may birth he may birth we may birth you may birth they may birth
V-ing form
I may be birthing you may be birthing he may be birthing we may be birthing you may be birthing they may be birthing
Perfect
I may have birthed you may have birthed he may have birthed we may have birthed you may have birthed they may have birthed
V-ing perfect
I may have been birthing you may have been birthing he may have been birthing we may have been birthing you may have been birthing they may have been birthing
Negation
Simple form
I mayn't birth you mayn't birth he mayn't birth we mayn't birth you mayn't birth they mayn't birth
V-ing form
I mayn't be birthing you mayn't be birthing he mayn't be birthing we mayn't be birthing you mayn't be birthing they mayn't be birthing
Perfect
I mayn't have birthed you mayn't have birthed he mayn't have birthed we mayn't have birthed you mayn't have birthed they mayn't have birthed
V-ing perfect
I mayn't have been birthing you mayn't have been birthing he mayn't have been birthing we mayn't have been birthing you mayn't have been birthing they mayn't have been birthing
Interrogative form
Simple form
may I birth? may you birth? may he birth? may we birth? may you birth? may they birth?
V-ing form
may I be birthing? may you be birthing? may he be birthing? may we be birthing? may you be birthing? may they be birthing?
Perfect
may I have birthed? may you have birthed? may he have birthed? may we have birthed? may you have birthed? may they have birthed?
V-ing perfect
may I have been birthing? may you have been birthing? may he have been birthing? may we have been birthing? may you have been birthing? may they have been birthing?
Interro-negative form
Simple form
mayn't I birth? mayn't you birth? mayn't he birth? mayn't we birth? mayn't you birth? mayn't they birth?
V-ing form
mayn't I be birthing? mayn't you be birthing? mayn't he be birthing? mayn't we be birthing? mayn't you be birthing? mayn't they be birthing?
Perfect
mayn't I have birthed? mayn't you have birthed? mayn't he have birthed? mayn't we have birthed? mayn't you have birthed? mayn't they have birthed?
V-ing perfect
mayn't I have been birthing? mayn't you have been birthing? mayn't he have been birthing? mayn't we have been birthing? mayn't you have been birthing? mayn't they have been birthing?