must overharden
Verbe régulier : overharden - overhardened- overhardened

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must overharden
you must overharden
he must overharden
we must overharden
you must overharden
they must overharden 	I must be overhardening
you must be overhardening
he must be overhardening
we must be overhardening
you must be overhardening
they must be overhardening	I must have overhardened
you must have overhardened
he must have overhardened
we must have overhardened
you must have overhardened
they must have overhardened	I must have been overhardening
you must have been overhardening
he must have been overhardening
we must have been overhardening
you must have been overhardening
they must have been overhardening	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not overharden
you must not overharden
he must not overharden
we must not overharden
you must not overharden
they must not overharden 	I must not be overhardening
you must not be overhardening
he must not be overhardening
we must not be overhardening
you must not be overhardening
they must not be overhardening	I must not have overhardened
you must not have overhardened
he must not have overhardened
we must not have overhardened
you must not have overhardened
they must not have overhardened	I must not have been overhardening
you must not have been overhardening
he must not have been overhardening
we must not have been overhardening
you must not have been overhardening
they must not have been overhardening	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I overharden?
must you overharden?
must he overharden?
must we overharden?
must you overharden?
must they overharden? 	must I be overhardening?
must you be overhardening?
must he be overhardening?
must we be overhardening?
must you be overhardening?
must they be overhardening? 	must I have overhardened?
must you have overhardened?
must he have overhardened?
must we have overhardened?
must you have overhardened?
must they have overhardened? 	must I have been overhardening?
must you have been overhardening?
must he have been overhardening?
must we have been overhardening?
must you have been overhardening?
must they have been overhardening? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not overharden?
must you not overharden?
must he not overharden?
must we not overharden?
must you not overharden?
must they not overharden? 	must I not be overhardening?
must you not be overhardening?
must he not be overhardening?
must we not be overhardening?
must you not be overhardening?
must they not be overhardening? 	must I not have overhardened?
must you not have overhardened?
must he not have overhardened?
must we not have overhardened?
must you not have overhardened?
must they not have overhardened? 	must I not have been overhardening?
must you not have been overhardening?
must he not have been overhardening?
must we not have been overhardening?
must you not have been overhardening?
must they not have been overhardening?