Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must benefit advantage so you must benefit advantage so he must benefit advantage so we must benefit advantage so you must benefit advantage so they must benefit advantage so
V-ing form
I must be benefit advantage soing you must be benefit advantage soing he must be benefit advantage soing we must be benefit advantage soing you must be benefit advantage soing they must be benefit advantage soing
Perfect
I must have benefit advantage soed you must have benefit advantage soed he must have benefit advantage soed we must have benefit advantage soed you must have benefit advantage soed they must have benefit advantage soed
V-ing perfect
I must have been benefit advantage soing you must have been benefit advantage soing he must have been benefit advantage soing we must have been benefit advantage soing you must have been benefit advantage soing they must have been benefit advantage soing
Negation
Simple form
I mustn't benefit advantage so you mustn't benefit advantage so he mustn't benefit advantage so we mustn't benefit advantage so you mustn't benefit advantage so they mustn't benefit advantage so
V-ing form
I mustn't be benefit advantage soing you mustn't be benefit advantage soing he mustn't be benefit advantage soing we mustn't be benefit advantage soing you mustn't be benefit advantage soing they mustn't be benefit advantage soing
Perfect
I mustn't have benefit advantage soed you mustn't have benefit advantage soed he mustn't have benefit advantage soed we mustn't have benefit advantage soed you mustn't have benefit advantage soed they mustn't have benefit advantage soed
V-ing perfect
I mustn't have been benefit advantage soing you mustn't have been benefit advantage soing he mustn't have been benefit advantage soing we mustn't have been benefit advantage soing you mustn't have been benefit advantage soing they mustn't have been benefit advantage soing
Interrogative form
Simple form
must I benefit advantage so? must you benefit advantage so? must he benefit advantage so? must we benefit advantage so? must you benefit advantage so? must they benefit advantage so?
V-ing form
must I be benefit advantage soing? must you be benefit advantage soing? must he be benefit advantage soing? must we be benefit advantage soing? must you be benefit advantage soing? must they be benefit advantage soing?
Perfect
must I have benefit advantage soed? must you have benefit advantage soed? must he have benefit advantage soed? must we have benefit advantage soed? must you have benefit advantage soed? must they have benefit advantage soed?
V-ing perfect
must I have been benefit advantage soing? must you have been benefit advantage soing? must he have been benefit advantage soing? must we have been benefit advantage soing? must you have been benefit advantage soing? must they have been benefit advantage soing?
Interro-negative form
Simple form
mustn't I benefit advantage so? mustn't you benefit advantage so? mustn't he benefit advantage so? mustn't we benefit advantage so? mustn't you benefit advantage so? mustn't they benefit advantage so?
V-ing form
mustn't I be benefit advantage soing? mustn't you be benefit advantage soing? mustn't he be benefit advantage soing? mustn't we be benefit advantage soing? mustn't you be benefit advantage soing? mustn't they be benefit advantage soing?
Perfect
mustn't I have benefit advantage soed? mustn't you have benefit advantage soed? mustn't he have benefit advantage soed? mustn't we have benefit advantage soed? mustn't you have benefit advantage soed? mustn't they have benefit advantage soed?
V-ing perfect
mustn't I have been benefit advantage soing? mustn't you have been benefit advantage soing? mustn't he have been benefit advantage soing? mustn't we have been benefit advantage soing? mustn't you have been benefit advantage soing? mustn't they have been benefit advantage soing?