I must leach you must leach he must leach we must leach you must leach they must leach
Forme en V-ing
I must be leaching you must be leaching he must be leaching we must be leaching you must be leaching they must be leaching
Perfect
I must have leached you must have leached he must have leached we must have leached you must have leached they must have leached
Perfect en V-ing
I must have been leaching you must have been leaching he must have been leaching we must have been leaching you must have been leaching they must have been leaching
Négation
Forme simple
I mustn't leach you mustn't leach he mustn't leach we mustn't leach you mustn't leach they mustn't leach
Forme en V-ing
I mustn't be leaching you mustn't be leaching he mustn't be leaching we mustn't be leaching you mustn't be leaching they mustn't be leaching
Perfect
I mustn't have leached you mustn't have leached he mustn't have leached we mustn't have leached you mustn't have leached they mustn't have leached
Perfect en V-ing
I mustn't have been leaching you mustn't have been leaching he mustn't have been leaching we mustn't have been leaching you mustn't have been leaching they mustn't have been leaching
Forme interrogative
Forme simple
must I leach? must you leach? must he leach? must we leach? must you leach? must they leach?
Forme en V-ing
must I be leaching? must you be leaching? must he be leaching? must we be leaching? must you be leaching? must they be leaching?
Perfect
must I have leached? must you have leached? must he have leached? must we have leached? must you have leached? must they have leached?
Perfect en V-ing
must I have been leaching? must you have been leaching? must he have been leaching? must we have been leaching? must you have been leaching? must they have been leaching?
Forme interro-négative
Forme simple
mustn't I leach? mustn't you leach? mustn't he leach? mustn't we leach? mustn't you leach? mustn't they leach?
Forme en V-ing
mustn't I be leaching? mustn't you be leaching? mustn't he be leaching? mustn't we be leaching? mustn't you be leaching? mustn't they be leaching?
Perfect
mustn't I have leached? mustn't you have leached? mustn't he have leached? mustn't we have leached? mustn't you have leached? mustn't they have leached?
Perfect en V-ing
mustn't I have been leaching? mustn't you have been leaching? mustn't he have been leaching? mustn't we have been leaching? mustn't you have been leaching? mustn't they have been leaching?