must burgeon
Regular verb: burgeon - burgeoned- burgeoned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must burgeon
you must burgeon
he must burgeon
we must burgeon
you must burgeon
they must burgeon 	I must be burgeoning
you must be burgeoning
he must be burgeoning
we must be burgeoning
you must be burgeoning
they must be burgeoning	I must have burgeoned
you must have burgeoned
he must have burgeoned
we must have burgeoned
you must have burgeoned
they must have burgeoned	I must have been burgeoning
you must have been burgeoning
he must have been burgeoning
we must have been burgeoning
you must have been burgeoning
they must have been burgeoning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't burgeon
you mustn't burgeon
he mustn't burgeon
we mustn't burgeon
you mustn't burgeon
they mustn't burgeon 	I mustn't be burgeoning
you mustn't be burgeoning
he mustn't be burgeoning
we mustn't be burgeoning
you mustn't be burgeoning
they mustn't be burgeoning	I mustn't have burgeoned
you mustn't have burgeoned
he mustn't have burgeoned
we mustn't have burgeoned
you mustn't have burgeoned
they mustn't have burgeoned	I mustn't have been burgeoning
you mustn't have been burgeoning
he mustn't have been burgeoning
we mustn't have been burgeoning
you mustn't have been burgeoning
they mustn't have been burgeoning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I burgeon?
must you burgeon?
must he burgeon?
must we burgeon?
must you burgeon?
must they burgeon? 	must I be burgeoning?
must you be burgeoning?
must he be burgeoning?
must we be burgeoning?
must you be burgeoning?
must they be burgeoning? 	must I have burgeoned?
must you have burgeoned?
must he have burgeoned?
must we have burgeoned?
must you have burgeoned?
must they have burgeoned? 	must I have been burgeoning?
must you have been burgeoning?
must he have been burgeoning?
must we have been burgeoning?
must you have been burgeoning?
must they have been burgeoning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I burgeon?
mustn't you burgeon?
mustn't he burgeon?
mustn't we burgeon?
mustn't you burgeon?
mustn't they burgeon? 	mustn't I be burgeoning?
mustn't you be burgeoning?
mustn't he be burgeoning?
mustn't we be burgeoning?
mustn't you be burgeoning?
mustn't they be burgeoning? 	mustn't I have burgeoned?
mustn't you have burgeoned?
mustn't he have burgeoned?
mustn't we have burgeoned?
mustn't you have burgeoned?
mustn't they have burgeoned? 	mustn't I have been burgeoning?
mustn't you have been burgeoning?
mustn't he have been burgeoning?
mustn't we have been burgeoning?
mustn't you have been burgeoning?
mustn't they have been burgeoning?