could illumine
Regular verb: illumine - illumined- illumined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could illumine
you could illumine
he could illumine
we could illumine
you could illumine
they could illumine 	I could be illumining
you could be illumining
he could be illumining
we could be illumining
you could be illumining
they could be illumining	I could have illumined
you could have illumined
he could have illumined
we could have illumined
you could have illumined
they could have illumined	I could have been illumining
you could have been illumining
he could have been illumining
we could have been illumining
you could have been illumining
they could have been illumining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't illumine
you couldn't illumine
he couldn't illumine
we couldn't illumine
you couldn't illumine
they couldn't illumine 	I couldn't be illumining
you couldn't be illumining
he couldn't be illumining
we couldn't be illumining
you couldn't be illumining
they couldn't be illumining	I couldn't have illumined
you couldn't have illumined
he couldn't have illumined
we couldn't have illumined
you couldn't have illumined
they couldn't have illumined	I couldn't have been illumining
you couldn't have been illumining
he couldn't have been illumining
we couldn't have been illumining
you couldn't have been illumining
they couldn't have been illumining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I illumine?
could you illumine?
could he illumine?
could we illumine?
could you illumine?
could they illumine? 	could I be illumining?
could you be illumining?
could he be illumining?
could we be illumining?
could you be illumining?
could they be illumining? 	could I have illumined?
could you have illumined?
could he have illumined?
could we have illumined?
could you have illumined?
could they have illumined? 	could I have been illumining?
could you have been illumining?
could he have been illumining?
could we have been illumining?
could you have been illumining?
could they have been illumining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I illumine?
couldn't you illumine?
couldn't he illumine?
couldn't we illumine?
couldn't you illumine?
couldn't they illumine? 	couldn't I be illumining?
couldn't you be illumining?
couldn't he be illumining?
couldn't we be illumining?
couldn't you be illumining?
couldn't they be illumining? 	couldn't I have illumined?
couldn't you have illumined?
couldn't he have illumined?
couldn't we have illumined?
couldn't you have illumined?
couldn't they have illumined? 	couldn't I have been illumining?
couldn't you have been illumining?
couldn't he have been illumining?
couldn't we have been illumining?
couldn't you have been illumining?
couldn't they have been illumining?