must backlight
Irregular verb: backlight - backlit- backlit

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must backlight
you must backlight
she must backlight
we must backlight
you must backlight
they must backlight 	I must be backlighting
you must be backlighting
she must be backlighting
we must be backlighting
you must be backlighting
they must be backlighting	I must have backlit
you must have backlit
she must have backlit
we must have backlit
you must have backlit
they must have backlit	I must have been backlighting
you must have been backlighting
she must have been backlighting
we must have been backlighting
you must have been backlighting
they must have been backlighting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't backlight
you mustn't backlight
she mustn't backlight
we mustn't backlight
you mustn't backlight
they mustn't backlight 	I mustn't be backlighting
you mustn't be backlighting
she mustn't be backlighting
we mustn't be backlighting
you mustn't be backlighting
they mustn't be backlighting	I mustn't have backlit
you mustn't have backlit
she mustn't have backlit
we mustn't have backlit
you mustn't have backlit
they mustn't have backlit	I mustn't have been backlighting
you mustn't have been backlighting
she mustn't have been backlighting
we mustn't have been backlighting
you mustn't have been backlighting
they mustn't have been backlighting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I backlight?
must you backlight?
must she backlight?
must we backlight?
must you backlight?
must they backlight? 	must I be backlighting?
must you be backlighting?
must she be backlighting?
must we be backlighting?
must you be backlighting?
must they be backlighting? 	must I have backlit?
must you have backlit?
must she have backlit?
must we have backlit?
must you have backlit?
must they have backlit? 	must I have been backlighting?
must you have been backlighting?
must she have been backlighting?
must we have been backlighting?
must you have been backlighting?
must they have been backlighting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I backlight?
mustn't you backlight?
mustn't she backlight?
mustn't we backlight?
mustn't you backlight?
mustn't they backlight? 	mustn't I be backlighting?
mustn't you be backlighting?
mustn't she be backlighting?
mustn't we be backlighting?
mustn't you be backlighting?
mustn't they be backlighting? 	mustn't I have backlit?
mustn't you have backlit?
mustn't she have backlit?
mustn't we have backlit?
mustn't you have backlit?
mustn't they have backlit? 	mustn't I have been backlighting?
mustn't you have been backlighting?
mustn't she have been backlighting?
mustn't we have been backlighting?
mustn't you have been backlighting?
mustn't they have been backlighting?