must luck
Verbe régulier : luck - lucked- lucked

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must luck
you must luck
he must luck
we must luck
you must luck
they must luck 	I must be lucking
you must be lucking
he must be lucking
we must be lucking
you must be lucking
they must be lucking	I must have lucked
you must have lucked
he must have lucked
we must have lucked
you must have lucked
they must have lucked	I must have been lucking
you must have been lucking
he must have been lucking
we must have been lucking
you must have been lucking
they must have been lucking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't luck
you mustn't luck
he mustn't luck
we mustn't luck
you mustn't luck
they mustn't luck 	I mustn't be lucking
you mustn't be lucking
he mustn't be lucking
we mustn't be lucking
you mustn't be lucking
they mustn't be lucking	I mustn't have lucked
you mustn't have lucked
he mustn't have lucked
we mustn't have lucked
you mustn't have lucked
they mustn't have lucked	I mustn't have been lucking
you mustn't have been lucking
he mustn't have been lucking
we mustn't have been lucking
you mustn't have been lucking
they mustn't have been lucking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I luck?
must you luck?
must he luck?
must we luck?
must you luck?
must they luck? 	must I be lucking?
must you be lucking?
must he be lucking?
must we be lucking?
must you be lucking?
must they be lucking? 	must I have lucked?
must you have lucked?
must he have lucked?
must we have lucked?
must you have lucked?
must they have lucked? 	must I have been lucking?
must you have been lucking?
must he have been lucking?
must we have been lucking?
must you have been lucking?
must they have been lucking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I luck?
mustn't you luck?
mustn't he luck?
mustn't we luck?
mustn't you luck?
mustn't they luck? 	mustn't I be lucking?
mustn't you be lucking?
mustn't he be lucking?
mustn't we be lucking?
mustn't you be lucking?
mustn't they be lucking? 	mustn't I have lucked?
mustn't you have lucked?
mustn't he have lucked?
mustn't we have lucked?
mustn't you have lucked?
mustn't they have lucked? 	mustn't I have been lucking?
mustn't you have been lucking?
mustn't he have been lucking?
mustn't we have been lucking?
mustn't you have been lucking?
mustn't they have been lucking?