I must disadvantage you must disadvantage he must disadvantage we must disadvantage you must disadvantage they must disadvantage
V-ing form
I must be disadvantaging you must be disadvantaging he must be disadvantaging we must be disadvantaging you must be disadvantaging they must be disadvantaging
Perfect
I must have disadvantaged you must have disadvantaged he must have disadvantaged we must have disadvantaged you must have disadvantaged they must have disadvantaged
V-ing perfect
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
I mustn't disadvantage you mustn't disadvantage he mustn't disadvantage we mustn't disadvantage you mustn't disadvantage they mustn't disadvantage
V-ing form
I mustn't be disadvantaging you mustn't be disadvantaging he mustn't be disadvantaging we mustn't be disadvantaging you mustn't be disadvantaging they mustn't be disadvantaging
Perfect
I mustn't have disadvantaged you mustn't have disadvantaged he mustn't have disadvantaged we mustn't have disadvantaged you mustn't have disadvantaged they mustn't have disadvantaged
V-ing perfect
I mustn't have been disadvantaging you mustn't have been disadvantaging he mustn't have been disadvantaging we mustn't have been disadvantaging you mustn't have been disadvantaging they mustn't have been disadvantaging
Interrogative form
Simple form
must I disadvantage? must you disadvantage? must he disadvantage? must we disadvantage? must you disadvantage? must they disadvantage?
V-ing form
must I be disadvantaging? must you be disadvantaging? must he be disadvantaging? must we be disadvantaging? must you be disadvantaging? must they be disadvantaging?
Perfect
must I have disadvantaged? must you have disadvantaged? must he have disadvantaged? must we have disadvantaged? must you have disadvantaged? must they have disadvantaged?
V-ing perfect
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
mustn't I disadvantage? mustn't you disadvantage? mustn't he disadvantage? mustn't we disadvantage? mustn't you disadvantage? mustn't they disadvantage?
V-ing form
mustn't I be disadvantaging? mustn't you be disadvantaging? mustn't he be disadvantaging? mustn't we be disadvantaging? mustn't you be disadvantaging? mustn't they be disadvantaging?
Perfect
mustn't I have disadvantaged? mustn't you have disadvantaged? mustn't he have disadvantaged? mustn't we have disadvantaged? mustn't you have disadvantaged? mustn't they have disadvantaged?
V-ing perfect
mustn't I have been disadvantaging? mustn't you have been disadvantaging? mustn't he have been disadvantaging? mustn't we have been disadvantaging? mustn't you have been disadvantaging? mustn't they have been disadvantaging?