must expense
Verbe régulier : expense - expensed- expensed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must expense
you must expense
she must expense
we must expense
you must expense
they must expense 	I must be expensing
you must be expensing
she must be expensing
we must be expensing
you must be expensing
they must be expensing	I must have expensed
you must have expensed
she must have expensed
we must have expensed
you must have expensed
they must have expensed	I must have been expensing
you must have been expensing
she must have been expensing
we must have been expensing
you must have been expensing
they must have been expensing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't expense
you mustn't expense
she mustn't expense
we mustn't expense
you mustn't expense
they mustn't expense 	I mustn't be expensing
you mustn't be expensing
she mustn't be expensing
we mustn't be expensing
you mustn't be expensing
they mustn't be expensing	I mustn't have expensed
you mustn't have expensed
she mustn't have expensed
we mustn't have expensed
you mustn't have expensed
they mustn't have expensed	I mustn't have been expensing
you mustn't have been expensing
she mustn't have been expensing
we mustn't have been expensing
you mustn't have been expensing
they mustn't have been expensing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I expense?
must you expense?
must she expense?
must we expense?
must you expense?
must they expense? 	must I be expensing?
must you be expensing?
must she be expensing?
must we be expensing?
must you be expensing?
must they be expensing? 	must I have expensed?
must you have expensed?
must she have expensed?
must we have expensed?
must you have expensed?
must they have expensed? 	must I have been expensing?
must you have been expensing?
must she have been expensing?
must we have been expensing?
must you have been expensing?
must they have been expensing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I expense?
mustn't you expense?
mustn't she expense?
mustn't we expense?
mustn't you expense?
mustn't they expense? 	mustn't I be expensing?
mustn't you be expensing?
mustn't she be expensing?
mustn't we be expensing?
mustn't you be expensing?
mustn't they be expensing? 	mustn't I have expensed?
mustn't you have expensed?
mustn't she have expensed?
mustn't we have expensed?
mustn't you have expensed?
mustn't they have expensed? 	mustn't I have been expensing?
mustn't you have been expensing?
mustn't she have been expensing?
mustn't we have been expensing?
mustn't you have been expensing?
mustn't they have been expensing?