must yada-yada
Verbe régulier : yada-yada - yada-yadaed- yada-yadaed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must yada-yada
you must yada-yada
he must yada-yada
we must yada-yada
you must yada-yada
they must yada-yada 	I must be yada-yadaing
you must be yada-yadaing
he must be yada-yadaing
we must be yada-yadaing
you must be yada-yadaing
they must be yada-yadaing	I must have yada-yadaed
you must have yada-yadaed
he must have yada-yadaed
we must have yada-yadaed
you must have yada-yadaed
they must have yada-yadaed	I must have been yada-yadaing
you must have been yada-yadaing
he must have been yada-yadaing
we must have been yada-yadaing
you must have been yada-yadaing
they must have been yada-yadaing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't yada-yada
you mustn't yada-yada
he mustn't yada-yada
we mustn't yada-yada
you mustn't yada-yada
they mustn't yada-yada 	I mustn't be yada-yadaing
you mustn't be yada-yadaing
he mustn't be yada-yadaing
we mustn't be yada-yadaing
you mustn't be yada-yadaing
they mustn't be yada-yadaing	I mustn't have yada-yadaed
you mustn't have yada-yadaed
he mustn't have yada-yadaed
we mustn't have yada-yadaed
you mustn't have yada-yadaed
they mustn't have yada-yadaed	I mustn't have been yada-yadaing
you mustn't have been yada-yadaing
he mustn't have been yada-yadaing
we mustn't have been yada-yadaing
you mustn't have been yada-yadaing
they mustn't have been yada-yadaing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I yada-yada?
must you yada-yada?
must he yada-yada?
must we yada-yada?
must you yada-yada?
must they yada-yada? 	must I be yada-yadaing?
must you be yada-yadaing?
must he be yada-yadaing?
must we be yada-yadaing?
must you be yada-yadaing?
must they be yada-yadaing? 	must I have yada-yadaed?
must you have yada-yadaed?
must he have yada-yadaed?
must we have yada-yadaed?
must you have yada-yadaed?
must they have yada-yadaed? 	must I have been yada-yadaing?
must you have been yada-yadaing?
must he have been yada-yadaing?
must we have been yada-yadaing?
must you have been yada-yadaing?
must they have been yada-yadaing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I yada-yada?
mustn't you yada-yada?
mustn't he yada-yada?
mustn't we yada-yada?
mustn't you yada-yada?
mustn't they yada-yada? 	mustn't I be yada-yadaing?
mustn't you be yada-yadaing?
mustn't he be yada-yadaing?
mustn't we be yada-yadaing?
mustn't you be yada-yadaing?
mustn't they be yada-yadaing? 	mustn't I have yada-yadaed?
mustn't you have yada-yadaed?
mustn't he have yada-yadaed?
mustn't we have yada-yadaed?
mustn't you have yada-yadaed?
mustn't they have yada-yadaed? 	mustn't I have been yada-yadaing?
mustn't you have been yada-yadaing?
mustn't he have been yada-yadaing?
mustn't we have been yada-yadaing?
mustn't you have been yada-yadaing?
mustn't they have been yada-yadaing?