I must untie you must untie he must untie we must untie you must untie they must untie
Forme en V-ing
I must be untying you must be untying he must be untying we must be untying you must be untying they must be untying
Perfect
I must have untied you must have untied he must have untied we must have untied you must have untied they must have untied
Perfect en V-ing
I must have been untying you must have been untying he must have been untying we must have been untying you must have been untying they must have been untying
Négation
Forme simple
I must not untie you must not untie he must not untie we must not untie you must not untie they must not untie
Forme en V-ing
I must not be untying you must not be untying he must not be untying we must not be untying you must not be untying they must not be untying
Perfect
I must not have untied you must not have untied he must not have untied we must not have untied you must not have untied they must not have untied
Perfect en V-ing
I must not have been untying you must not have been untying he must not have been untying we must not have been untying you must not have been untying they must not have been untying
Forme interrogative
Forme simple
must I untie? must you untie? must he untie? must we untie? must you untie? must they untie?
Forme en V-ing
must I be untying? must you be untying? must he be untying? must we be untying? must you be untying? must they be untying?
Perfect
must I have untied? must you have untied? must he have untied? must we have untied? must you have untied? must they have untied?
Perfect en V-ing
must I have been untying? must you have been untying? must he have been untying? must we have been untying? must you have been untying? must they have been untying?
Forme interro-négative
Forme simple
must I not untie? must you not untie? must he not untie? must we not untie? must you not untie? must they not untie?
Forme en V-ing
must I not be untying? must you not be untying? must he not be untying? must we not be untying? must you not be untying? must they not be untying?
Perfect
must I not have untied? must you not have untied? must he not have untied? must we not have untied? must you not have untied? must they not have untied?
Perfect en V-ing
must I not have been untying? must you not have been untying? must he not have been untying? must we not have been untying? must you not have been untying? must they not have been untying?