I must employ you must employ he must employ we must employ you must employ they must employ
V-ing form
I must be employing you must be employing he must be employing we must be employing you must be employing they must be employing
Perfect
I must have employed you must have employed he must have employed we must have employed you must have employed they must have employed
V-ing perfect
I must have been employing you must have been employing he must have been employing we must have been employing you must have been employing they must have been employing
Negation
Simple form
I mustn't employ you mustn't employ he mustn't employ we mustn't employ you mustn't employ they mustn't employ
V-ing form
I mustn't be employing you mustn't be employing he mustn't be employing we mustn't be employing you mustn't be employing they mustn't be employing
Perfect
I mustn't have employed you mustn't have employed he mustn't have employed we mustn't have employed you mustn't have employed they mustn't have employed
V-ing perfect
I mustn't have been employing you mustn't have been employing he mustn't have been employing we mustn't have been employing you mustn't have been employing they mustn't have been employing
Interrogative form
Simple form
must I employ? must you employ? must he employ? must we employ? must you employ? must they employ?
V-ing form
must I be employing? must you be employing? must he be employing? must we be employing? must you be employing? must they be employing?
Perfect
must I have employed? must you have employed? must he have employed? must we have employed? must you have employed? must they have employed?
V-ing perfect
must I have been employing? must you have been employing? must he have been employing? must we have been employing? must you have been employing? must they have been employing?
Interro-negative form
Simple form
mustn't I employ? mustn't you employ? mustn't he employ? mustn't we employ? mustn't you employ? mustn't they employ?
V-ing form
mustn't I be employing? mustn't you be employing? mustn't he be employing? mustn't we be employing? mustn't you be employing? mustn't they be employing?
Perfect
mustn't I have employed? mustn't you have employed? mustn't he have employed? mustn't we have employed? mustn't you have employed? mustn't they have employed?
V-ing perfect
mustn't I have been employing? mustn't you have been employing? mustn't he have been employing? mustn't we have been employing? mustn't you have been employing? mustn't they have been employing?