must lek
Verbe régulier : lek - leked- leked

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must lek
you must lek
he must lek
we must lek
you must lek
they must lek 	I must be leking
you must be leking
he must be leking
we must be leking
you must be leking
they must be leking	I must have leked
you must have leked
he must have leked
we must have leked
you must have leked
they must have leked	I must have been leking
you must have been leking
he must have been leking
we must have been leking
you must have been leking
they must have been leking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't lek
you mustn't lek
he mustn't lek
we mustn't lek
you mustn't lek
they mustn't lek 	I mustn't be leking
you mustn't be leking
he mustn't be leking
we mustn't be leking
you mustn't be leking
they mustn't be leking	I mustn't have leked
you mustn't have leked
he mustn't have leked
we mustn't have leked
you mustn't have leked
they mustn't have leked	I mustn't have been leking
you mustn't have been leking
he mustn't have been leking
we mustn't have been leking
you mustn't have been leking
they mustn't have been leking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I lek?
must you lek?
must he lek?
must we lek?
must you lek?
must they lek? 	must I be leking?
must you be leking?
must he be leking?
must we be leking?
must you be leking?
must they be leking? 	must I have leked?
must you have leked?
must he have leked?
must we have leked?
must you have leked?
must they have leked? 	must I have been leking?
must you have been leking?
must he have been leking?
must we have been leking?
must you have been leking?
must they have been leking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I lek?
mustn't you lek?
mustn't he lek?
mustn't we lek?
mustn't you lek?
mustn't they lek? 	mustn't I be leking?
mustn't you be leking?
mustn't he be leking?
mustn't we be leking?
mustn't you be leking?
mustn't they be leking? 	mustn't I have leked?
mustn't you have leked?
mustn't he have leked?
mustn't we have leked?
mustn't you have leked?
mustn't they have leked? 	mustn't I have been leking?
mustn't you have been leking?
mustn't he have been leking?
mustn't we have been leking?
mustn't you have been leking?
mustn't they have been leking?