must disadvantage
Regular verb: disadvantage - disadvantaged- disadvantaged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must disadvantage
you must disadvantage
he must disadvantage
we must disadvantage
you must disadvantage
they must disadvantage 	I must be disadvantaging
you must be disadvantaging
he must be disadvantaging
we must be disadvantaging
you must be disadvantaging
they must be disadvantaging	I must have disadvantaged
you must have disadvantaged
he must have disadvantaged
we must have disadvantaged
you must have disadvantaged
they must have disadvantaged	I must have been disadvantaging
you must have been disadvantaging
he must have been disadvantaging
we must have been disadvantaging
you must have been disadvantaging
they must have been disadvantaging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not disadvantage
you must not disadvantage
he must not disadvantage
we must not disadvantage
you must not disadvantage
they must not disadvantage 	I must not be disadvantaging
you must not be disadvantaging
he must not be disadvantaging
we must not be disadvantaging
you must not be disadvantaging
they must not be disadvantaging	I must not have disadvantaged
you must not have disadvantaged
he must not have disadvantaged
we must not have disadvantaged
you must not have disadvantaged
they must not have disadvantaged	I must not have been disadvantaging
you must not have been disadvantaging
he must not have been disadvantaging
we must not have been disadvantaging
you must not have been disadvantaging
they must not have been disadvantaging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I disadvantage?
must you disadvantage?
must he disadvantage?
must we disadvantage?
must you disadvantage?
must they disadvantage? 	must I be disadvantaging?
must you be disadvantaging?
must he be disadvantaging?
must we be disadvantaging?
must you be disadvantaging?
must they be disadvantaging? 	must I have disadvantaged?
must you have disadvantaged?
must he have disadvantaged?
must we have disadvantaged?
must you have disadvantaged?
must they have disadvantaged? 	must I have been disadvantaging?
must you have been disadvantaging?
must he have been disadvantaging?
must we have been disadvantaging?
must you have been disadvantaging?
must they have been disadvantaging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not disadvantage?
must you not disadvantage?
must he not disadvantage?
must we not disadvantage?
must you not disadvantage?
must they not disadvantage? 	must I not be disadvantaging?
must you not be disadvantaging?
must he not be disadvantaging?
must we not be disadvantaging?
must you not be disadvantaging?
must they not be disadvantaging? 	must I not have disadvantaged?
must you not have disadvantaged?
must he not have disadvantaged?
must we not have disadvantaged?
must you not have disadvantaged?
must they not have disadvantaged? 	must I not have been disadvantaging?
must you not have been disadvantaging?
must he not have been disadvantaging?
must we not have been disadvantaging?
must you not have been disadvantaging?
must they not have been disadvantaging?