must advantage
Regular verb: advantage - advantaged- advantaged

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

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

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

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