I must mismanage you must mismanage she must mismanage we must mismanage you must mismanage they must mismanage
V-ing form
I must be mismanaging you must be mismanaging she must be mismanaging we must be mismanaging you must be mismanaging they must be mismanaging
Perfect
I must have mismanaged you must have mismanaged she must have mismanaged we must have mismanaged you must have mismanaged they must have mismanaged
V-ing perfect
I must have been mismanaging you must have been mismanaging she must have been mismanaging we must have been mismanaging you must have been mismanaging they must have been mismanaging
Negation
Simple form
I mustn't mismanage you mustn't mismanage she mustn't mismanage we mustn't mismanage you mustn't mismanage they mustn't mismanage
V-ing form
I mustn't be mismanaging you mustn't be mismanaging she mustn't be mismanaging we mustn't be mismanaging you mustn't be mismanaging they mustn't be mismanaging
Perfect
I mustn't have mismanaged you mustn't have mismanaged she mustn't have mismanaged we mustn't have mismanaged you mustn't have mismanaged they mustn't have mismanaged
V-ing perfect
I mustn't have been mismanaging you mustn't have been mismanaging she mustn't have been mismanaging we mustn't have been mismanaging you mustn't have been mismanaging they mustn't have been mismanaging
Interrogative form
Simple form
must I mismanage? must you mismanage? must she mismanage? must we mismanage? must you mismanage? must they mismanage?
V-ing form
must I be mismanaging? must you be mismanaging? must she be mismanaging? must we be mismanaging? must you be mismanaging? must they be mismanaging?
Perfect
must I have mismanaged? must you have mismanaged? must she have mismanaged? must we have mismanaged? must you have mismanaged? must they have mismanaged?
V-ing perfect
must I have been mismanaging? must you have been mismanaging? must she have been mismanaging? must we have been mismanaging? must you have been mismanaging? must they have been mismanaging?
Interro-negative form
Simple form
mustn't I mismanage? mustn't you mismanage? mustn't she mismanage? mustn't we mismanage? mustn't you mismanage? mustn't they mismanage?
V-ing form
mustn't I be mismanaging? mustn't you be mismanaging? mustn't she be mismanaging? mustn't we be mismanaging? mustn't you be mismanaging? mustn't they be mismanaging?
Perfect
mustn't I have mismanaged? mustn't you have mismanaged? mustn't she have mismanaged? mustn't we have mismanaged? mustn't you have mismanaged? mustn't they have mismanaged?
V-ing perfect
mustn't I have been mismanaging? mustn't you have been mismanaging? mustn't she have been mismanaging? mustn't we have been mismanaging? mustn't you have been mismanaging? mustn't they have been mismanaging?