could advantage
Regular verb: advantage - advantaged- advantaged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could advantage
you could advantage
she could advantage
we could advantage
you could advantage
they could advantage 	I could be advantaging
you could be advantaging
she could be advantaging
we could be advantaging
you could be advantaging
they could be advantaging	I could have advantaged
you could have advantaged
she could have advantaged
we could have advantaged
you could have advantaged
they could have advantaged	I could have been advantaging
you could have been advantaging
she could have been advantaging
we could have been advantaging
you could have been advantaging
they could have been advantaging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not advantage
you could not advantage
she could not advantage
we could not advantage
you could not advantage
they could not advantage 	I could not be advantaging
you could not be advantaging
she could not be advantaging
we could not be advantaging
you could not be advantaging
they could not be advantaging	I could not have advantaged
you could not have advantaged
she could not have advantaged
we could not have advantaged
you could not have advantaged
they could not have advantaged	I could not have been advantaging
you could not have been advantaging
she could not have been advantaging
we could not have been advantaging
you could not have been advantaging
they could not have been advantaging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I advantage?
could you advantage?
could she advantage?
could we advantage?
could you advantage?
could they advantage? 	could I be advantaging?
could you be advantaging?
could she be advantaging?
could we be advantaging?
could you be advantaging?
could they be advantaging? 	could I have advantaged?
could you have advantaged?
could she have advantaged?
could we have advantaged?
could you have advantaged?
could they have advantaged? 	could I have been advantaging?
could you have been advantaging?
could she have been advantaging?
could we have been advantaging?
could you have been advantaging?
could they have been advantaging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not advantage?
could you not advantage?
could she not advantage?
could we not advantage?
could you not advantage?
could they not advantage? 	could I not be advantaging?
could you not be advantaging?
could she not be advantaging?
could we not be advantaging?
could you not be advantaging?
could they not be advantaging? 	could I not have advantaged?
could you not have advantaged?
could she not have advantaged?
could we not have advantaged?
could you not have advantaged?
could they not have advantaged? 	could I not have been advantaging?
could you not have been advantaging?
could she not have been advantaging?
could we not have been advantaging?
could you not have been advantaging?
could they not have been advantaging?