must mason
Verbe régulier : mason - masoned- masoned

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must mason
you must mason
he must mason
we must mason
you must mason
they must mason 	I must be masoning
you must be masoning
he must be masoning
we must be masoning
you must be masoning
they must be masoning	I must have masoned
you must have masoned
he must have masoned
we must have masoned
you must have masoned
they must have masoned	I must have been masoning
you must have been masoning
he must have been masoning
we must have been masoning
you must have been masoning
they must have been masoning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not mason
you must not mason
he must not mason
we must not mason
you must not mason
they must not mason 	I must not be masoning
you must not be masoning
he must not be masoning
we must not be masoning
you must not be masoning
they must not be masoning	I must not have masoned
you must not have masoned
he must not have masoned
we must not have masoned
you must not have masoned
they must not have masoned	I must not have been masoning
you must not have been masoning
he must not have been masoning
we must not have been masoning
you must not have been masoning
they must not have been masoning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I mason?
must you mason?
must he mason?
must we mason?
must you mason?
must they mason? 	must I be masoning?
must you be masoning?
must he be masoning?
must we be masoning?
must you be masoning?
must they be masoning? 	must I have masoned?
must you have masoned?
must he have masoned?
must we have masoned?
must you have masoned?
must they have masoned? 	must I have been masoning?
must you have been masoning?
must he have been masoning?
must we have been masoning?
must you have been masoning?
must they have been masoning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not mason?
must you not mason?
must he not mason?
must we not mason?
must you not mason?
must they not mason? 	must I not be masoning?
must you not be masoning?
must he not be masoning?
must we not be masoning?
must you not be masoning?
must they not be masoning? 	must I not have masoned?
must you not have masoned?
must he not have masoned?
must we not have masoned?
must you not have masoned?
must they not have masoned? 	must I not have been masoning?
must you not have been masoning?
must he not have been masoning?
must we not have been masoning?
must you not have been masoning?
must they not have been masoning?