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 must not leach you must not leach he must not leach we must not leach you must not leach they must not leach
Forme en V-ing
I must not be leaching you must not be leaching he must not be leaching we must not be leaching you must not be leaching they must not be leaching
Perfect
I must not have leached you must not have leached he must not have leached we must not have leached you must not have leached they must not have leached
Perfect en V-ing
I must not have been leaching you must not have been leaching he must not have been leaching we must not have been leaching you must not have been leaching they must not 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
must I not leach? must you not leach? must he not leach? must we not leach? must you not leach? must they not leach?
Forme en V-ing
must I not be leaching? must you not be leaching? must he not be leaching? must we not be leaching? must you not be leaching? must they not be leaching?
Perfect
must I not have leached? must you not have leached? must he not have leached? must we not have leached? must you not have leached? must they not have leached?
Perfect en V-ing
must I not have been leaching? must you not have been leaching? must he not have been leaching? must we not have been leaching? must you not have been leaching? must they not have been leaching?