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