must serge
Verbe régulier : serge - serged- serged

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must serge
you must serge
he must serge
we must serge
you must serge
they must serge 	I must be serging
you must be serging
he must be serging
we must be serging
you must be serging
they must be serging	I must have serged
you must have serged
he must have serged
we must have serged
you must have serged
they must have serged	I must have been serging
you must have been serging
he must have been serging
we must have been serging
you must have been serging
they must have been serging	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't serge
you mustn't serge
he mustn't serge
we mustn't serge
you mustn't serge
they mustn't serge 	I mustn't be serging
you mustn't be serging
he mustn't be serging
we mustn't be serging
you mustn't be serging
they mustn't be serging	I mustn't have serged
you mustn't have serged
he mustn't have serged
we mustn't have serged
you mustn't have serged
they mustn't have serged	I mustn't have been serging
you mustn't have been serging
he mustn't have been serging
we mustn't have been serging
you mustn't have been serging
they mustn't have been serging	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I serge?
must you serge?
must he serge?
must we serge?
must you serge?
must they serge? 	must I be serging?
must you be serging?
must he be serging?
must we be serging?
must you be serging?
must they be serging? 	must I have serged?
must you have serged?
must he have serged?
must we have serged?
must you have serged?
must they have serged? 	must I have been serging?
must you have been serging?
must he have been serging?
must we have been serging?
must you have been serging?
must they have been serging? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I serge?
mustn't you serge?
mustn't he serge?
mustn't we serge?
mustn't you serge?
mustn't they serge? 	mustn't I be serging?
mustn't you be serging?
mustn't he be serging?
mustn't we be serging?
mustn't you be serging?
mustn't they be serging? 	mustn't I have serged?
mustn't you have serged?
mustn't he have serged?
mustn't we have serged?
mustn't you have serged?
mustn't they have serged? 	mustn't I have been serging?
mustn't you have been serging?
mustn't he have been serging?
mustn't we have been serging?
mustn't you have been serging?
mustn't they have been serging?