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 must not rupture
you must not rupture
he must not rupture
we must not rupture
you must not rupture
they must not rupture 	I must not be rupturing
you must not be rupturing
he must not be rupturing
we must not be rupturing
you must not be rupturing
they must not be rupturing	I must not have ruptured
you must not have ruptured
he must not have ruptured
we must not have ruptured
you must not have ruptured
they must not have ruptured	I must not have been rupturing
you must not have been rupturing
he must not have been rupturing
we must not have been rupturing
you must not have been rupturing
they must not 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 	
must I not rupture?
must you not rupture?
must he not rupture?
must we not rupture?
must you not rupture?
must they not rupture? 	must I not be rupturing?
must you not be rupturing?
must he not be rupturing?
must we not be rupturing?
must you not be rupturing?
must they not be rupturing? 	must I not have ruptured?
must you not have ruptured?
must he not have ruptured?
must we not have ruptured?
must you not have ruptured?
must they not have ruptured? 	must I not have been rupturing?
must you not have been rupturing?
must he not have been rupturing?
must we not have been rupturing?
must you not have been rupturing?
must they not have been rupturing?