must perdure
Verbe régulier : perdure - perdured- perdured

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must perdure
you must perdure
he must perdure
we must perdure
you must perdure
they must perdure 	I must be perduring
you must be perduring
he must be perduring
we must be perduring
you must be perduring
they must be perduring	I must have perdured
you must have perdured
he must have perdured
we must have perdured
you must have perdured
they must have perdured	I must have been perduring
you must have been perduring
he must have been perduring
we must have been perduring
you must have been perduring
they must have been perduring	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not perdure
you must not perdure
he must not perdure
we must not perdure
you must not perdure
they must not perdure 	I must not be perduring
you must not be perduring
he must not be perduring
we must not be perduring
you must not be perduring
they must not be perduring	I must not have perdured
you must not have perdured
he must not have perdured
we must not have perdured
you must not have perdured
they must not have perdured	I must not have been perduring
you must not have been perduring
he must not have been perduring
we must not have been perduring
you must not have been perduring
they must not have been perduring	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I perdure?
must you perdure?
must he perdure?
must we perdure?
must you perdure?
must they perdure? 	must I be perduring?
must you be perduring?
must he be perduring?
must we be perduring?
must you be perduring?
must they be perduring? 	must I have perdured?
must you have perdured?
must he have perdured?
must we have perdured?
must you have perdured?
must they have perdured? 	must I have been perduring?
must you have been perduring?
must he have been perduring?
must we have been perduring?
must you have been perduring?
must they have been perduring? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not perdure?
must you not perdure?
must he not perdure?
must we not perdure?
must you not perdure?
must they not perdure? 	must I not be perduring?
must you not be perduring?
must he not be perduring?
must we not be perduring?
must you not be perduring?
must they not be perduring? 	must I not have perdured?
must you not have perdured?
must he not have perdured?
must we not have perdured?
must you not have perdured?
must they not have perdured? 	must I not have been perduring?
must you not have been perduring?
must he not have been perduring?
must we not have been perduring?
must you not have been perduring?
must they not have been perduring?