must rupture
Regular verb: rupture - ruptured- ruptured

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

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

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

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