must expert
Regular verb: expert - experted- experted

, this verb may not exist. Conjugation is given as example.

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must expert
you must expert
he must expert
we must expert
you must expert
they must expert 	I must be experting
you must be experting
he must be experting
we must be experting
you must be experting
they must be experting	I must have experted
you must have experted
he must have experted
we must have experted
you must have experted
they must have experted	I must have been experting
you must have been experting
he must have been experting
we must have been experting
you must have been experting
they must have been experting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't expert
you mustn't expert
he mustn't expert
we mustn't expert
you mustn't expert
they mustn't expert 	I mustn't be experting
you mustn't be experting
he mustn't be experting
we mustn't be experting
you mustn't be experting
they mustn't be experting	I mustn't have experted
you mustn't have experted
he mustn't have experted
we mustn't have experted
you mustn't have experted
they mustn't have experted	I mustn't have been experting
you mustn't have been experting
he mustn't have been experting
we mustn't have been experting
you mustn't have been experting
they mustn't have been experting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I expert?
must you expert?
must he expert?
must we expert?
must you expert?
must they expert? 	must I be experting?
must you be experting?
must he be experting?
must we be experting?
must you be experting?
must they be experting? 	must I have experted?
must you have experted?
must he have experted?
must we have experted?
must you have experted?
must they have experted? 	must I have been experting?
must you have been experting?
must he have been experting?
must we have been experting?
must you have been experting?
must they have been experting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I expert?
mustn't you expert?
mustn't he expert?
mustn't we expert?
mustn't you expert?
mustn't they expert? 	mustn't I be experting?
mustn't you be experting?
mustn't he be experting?
mustn't we be experting?
mustn't you be experting?
mustn't they be experting? 	mustn't I have experted?
mustn't you have experted?
mustn't he have experted?
mustn't we have experted?
mustn't you have experted?
mustn't they have experted? 	mustn't I have been experting?
mustn't you have been experting?
mustn't he have been experting?
mustn't we have been experting?
mustn't you have been experting?
mustn't they have been experting?