may rupture
Regular verb: rupture - ruptured- ruptured

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may rupture
you may rupture
he may rupture
we may rupture
you may rupture
they may rupture 	I may be rupturing
you may be rupturing
he may be rupturing
we may be rupturing
you may be rupturing
they may be rupturing	I may have ruptured
you may have ruptured
he may have ruptured
we may have ruptured
you may have ruptured
they may have ruptured	I may have been rupturing
you may have been rupturing
he may have been rupturing
we may have been rupturing
you may have been rupturing
they may have been rupturing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't rupture
you mayn't rupture
he mayn't rupture
we mayn't rupture
you mayn't rupture
they mayn't rupture 	I mayn't be rupturing
you mayn't be rupturing
he mayn't be rupturing
we mayn't be rupturing
you mayn't be rupturing
they mayn't be rupturing	I mayn't have ruptured
you mayn't have ruptured
he mayn't have ruptured
we mayn't have ruptured
you mayn't have ruptured
they mayn't have ruptured	I mayn't have been rupturing
you mayn't have been rupturing
he mayn't have been rupturing
we mayn't have been rupturing
you mayn't have been rupturing
they mayn't have been rupturing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I rupture?
may you rupture?
may he rupture?
may we rupture?
may you rupture?
may they rupture? 	may I be rupturing?
may you be rupturing?
may he be rupturing?
may we be rupturing?
may you be rupturing?
may they be rupturing? 	may I have ruptured?
may you have ruptured?
may he have ruptured?
may we have ruptured?
may you have ruptured?
may they have ruptured? 	may I have been rupturing?
may you have been rupturing?
may he have been rupturing?
may we have been rupturing?
may you have been rupturing?
may they have been rupturing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I rupture?
mayn't you rupture?
mayn't he rupture?
mayn't we rupture?
mayn't you rupture?
mayn't they rupture? 	mayn't I be rupturing?
mayn't you be rupturing?
mayn't he be rupturing?
mayn't we be rupturing?
mayn't you be rupturing?
mayn't they be rupturing? 	mayn't I have ruptured?
mayn't you have ruptured?
mayn't he have ruptured?
mayn't we have ruptured?
mayn't you have ruptured?
mayn't they have ruptured? 	mayn't I have been rupturing?
mayn't you have been rupturing?
mayn't he have been rupturing?
mayn't we have been rupturing?
mayn't you have been rupturing?
mayn't they have been rupturing?