could backlight
Irregular verb: backlight - backlit- backlit

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not backlight
you could not backlight
she could not backlight
we could not backlight
you could not backlight
they could not backlight 	I could not be backlighting
you could not be backlighting
she could not be backlighting
we could not be backlighting
you could not be backlighting
they could not be backlighting	I could not have backlit
you could not have backlit
she could not have backlit
we could not have backlit
you could not have backlit
they could not have backlit	I could not have been backlighting
you could not have been backlighting
she could not have been backlighting
we could not have been backlighting
you could not have been backlighting
they could not have been backlighting	

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

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