must supervene
Regular verb: supervene - supervened- supervened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must supervene
you must supervene
he must supervene
we must supervene
you must supervene
they must supervene 	I must be supervening
you must be supervening
he must be supervening
we must be supervening
you must be supervening
they must be supervening	I must have supervened
you must have supervened
he must have supervened
we must have supervened
you must have supervened
they must have supervened	I must have been supervening
you must have been supervening
he must have been supervening
we must have been supervening
you must have been supervening
they must have been supervening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't supervene
you mustn't supervene
he mustn't supervene
we mustn't supervene
you mustn't supervene
they mustn't supervene 	I mustn't be supervening
you mustn't be supervening
he mustn't be supervening
we mustn't be supervening
you mustn't be supervening
they mustn't be supervening	I mustn't have supervened
you mustn't have supervened
he mustn't have supervened
we mustn't have supervened
you mustn't have supervened
they mustn't have supervened	I mustn't have been supervening
you mustn't have been supervening
he mustn't have been supervening
we mustn't have been supervening
you mustn't have been supervening
they mustn't have been supervening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I supervene?
must you supervene?
must he supervene?
must we supervene?
must you supervene?
must they supervene? 	must I be supervening?
must you be supervening?
must he be supervening?
must we be supervening?
must you be supervening?
must they be supervening? 	must I have supervened?
must you have supervened?
must he have supervened?
must we have supervened?
must you have supervened?
must they have supervened? 	must I have been supervening?
must you have been supervening?
must he have been supervening?
must we have been supervening?
must you have been supervening?
must they have been supervening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I supervene?
mustn't you supervene?
mustn't he supervene?
mustn't we supervene?
mustn't you supervene?
mustn't they supervene? 	mustn't I be supervening?
mustn't you be supervening?
mustn't he be supervening?
mustn't we be supervening?
mustn't you be supervening?
mustn't they be supervening? 	mustn't I have supervened?
mustn't you have supervened?
mustn't he have supervened?
mustn't we have supervened?
mustn't you have supervened?
mustn't they have supervened? 	mustn't I have been supervening?
mustn't you have been supervening?
mustn't he have been supervening?
mustn't we have been supervening?
mustn't you have been supervening?
mustn't they have been supervening?