I must backlight you must backlight he must backlight we must backlight you must backlight they must backlight
Forme en V-ing
I must be backlighting you must be backlighting he must be backlighting we must be backlighting you must be backlighting they must be backlighting
Perfect
I must have backlit you must have backlit he must have backlit we must have backlit you must have backlit they must have backlit
Perfect en V-ing
I must have been backlighting you must have been backlighting he must have been backlighting we must have been backlighting you must have been backlighting they must have been backlighting
Négation
Forme simple
I mustn't backlight you mustn't backlight he mustn't backlight we mustn't backlight you mustn't backlight they mustn't backlight
Forme en V-ing
I mustn't be backlighting you mustn't be backlighting he mustn't be backlighting we mustn't be backlighting you mustn't be backlighting they mustn't be backlighting
Perfect
I mustn't have backlit you mustn't have backlit he mustn't have backlit we mustn't have backlit you mustn't have backlit they mustn't have backlit
Perfect en V-ing
I mustn't have been backlighting you mustn't have been backlighting he mustn't have been backlighting we mustn't have been backlighting you mustn't have been backlighting they mustn't have been backlighting
Forme interrogative
Forme simple
must I backlight? must you backlight? must he backlight? must we backlight? must you backlight? must they backlight?
Forme en V-ing
must I be backlighting? must you be backlighting? must he be backlighting? must we be backlighting? must you be backlighting? must they be backlighting?
Perfect
must I have backlit? must you have backlit? must he have backlit? must we have backlit? must you have backlit? must they have backlit?
Perfect en V-ing
must I have been backlighting? must you have been backlighting? must he have been backlighting? must we have been backlighting? must you have been backlighting? must they have been backlighting?
Forme interro-négative
Forme simple
mustn't I backlight? mustn't you backlight? mustn't he backlight? mustn't we backlight? mustn't you backlight? mustn't they backlight?
Forme en V-ing
mustn't I be backlighting? mustn't you be backlighting? mustn't he be backlighting? mustn't we be backlighting? mustn't you be backlighting? mustn't they be backlighting?
Perfect
mustn't I have backlit? mustn't you have backlit? mustn't he have backlit? mustn't we have backlit? mustn't you have backlit? mustn't they have backlit?
Perfect en V-ing
mustn't I have been backlighting? mustn't you have been backlighting? mustn't he have been backlighting? mustn't we have been backlighting? mustn't you have been backlighting? mustn't they have been backlighting?