must billboard
Verbe régulier : billboard - billboarded- billboarded

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must billboard
you must billboard
he must billboard
we must billboard
you must billboard
they must billboard 	I must be billboarding
you must be billboarding
he must be billboarding
we must be billboarding
you must be billboarding
they must be billboarding	I must have billboarded
you must have billboarded
he must have billboarded
we must have billboarded
you must have billboarded
they must have billboarded	I must have been billboarding
you must have been billboarding
he must have been billboarding
we must have been billboarding
you must have been billboarding
they must have been billboarding	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not billboard
you must not billboard
he must not billboard
we must not billboard
you must not billboard
they must not billboard 	I must not be billboarding
you must not be billboarding
he must not be billboarding
we must not be billboarding
you must not be billboarding
they must not be billboarding	I must not have billboarded
you must not have billboarded
he must not have billboarded
we must not have billboarded
you must not have billboarded
they must not have billboarded	I must not have been billboarding
you must not have been billboarding
he must not have been billboarding
we must not have been billboarding
you must not have been billboarding
they must not have been billboarding	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I billboard?
must you billboard?
must he billboard?
must we billboard?
must you billboard?
must they billboard? 	must I be billboarding?
must you be billboarding?
must he be billboarding?
must we be billboarding?
must you be billboarding?
must they be billboarding? 	must I have billboarded?
must you have billboarded?
must he have billboarded?
must we have billboarded?
must you have billboarded?
must they have billboarded? 	must I have been billboarding?
must you have been billboarding?
must he have been billboarding?
must we have been billboarding?
must you have been billboarding?
must they have been billboarding? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not billboard?
must you not billboard?
must he not billboard?
must we not billboard?
must you not billboard?
must they not billboard? 	must I not be billboarding?
must you not be billboarding?
must he not be billboarding?
must we not be billboarding?
must you not be billboarding?
must they not be billboarding? 	must I not have billboarded?
must you not have billboarded?
must he not have billboarded?
must we not have billboarded?
must you not have billboarded?
must they not have billboarded? 	must I not have been billboarding?
must you not have been billboarding?
must he not have been billboarding?
must we not have been billboarding?
must you not have been billboarding?
must they not have been billboarding?