Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must manage manage you must manage manage she must manage manage we must manage manage you must manage manage they must manage manage
V-ing form
I must be manage managing you must be manage managing she must be manage managing we must be manage managing you must be manage managing they must be manage managing
Perfect
I must have manage managed you must have manage managed she must have manage managed we must have manage managed you must have manage managed they must have manage managed
V-ing perfect
I must have been manage managing you must have been manage managing she must have been manage managing we must have been manage managing you must have been manage managing they must have been manage managing
Negation
Simple form
I mustn't manage manage you mustn't manage manage she mustn't manage manage we mustn't manage manage you mustn't manage manage they mustn't manage manage
V-ing form
I mustn't be manage managing you mustn't be manage managing she mustn't be manage managing we mustn't be manage managing you mustn't be manage managing they mustn't be manage managing
Perfect
I mustn't have manage managed you mustn't have manage managed she mustn't have manage managed we mustn't have manage managed you mustn't have manage managed they mustn't have manage managed
V-ing perfect
I mustn't have been manage managing you mustn't have been manage managing she mustn't have been manage managing we mustn't have been manage managing you mustn't have been manage managing they mustn't have been manage managing
Interrogative form
Simple form
must I manage manage? must you manage manage? must she manage manage? must we manage manage? must you manage manage? must they manage manage?
V-ing form
must I be manage managing? must you be manage managing? must she be manage managing? must we be manage managing? must you be manage managing? must they be manage managing?
Perfect
must I have manage managed? must you have manage managed? must she have manage managed? must we have manage managed? must you have manage managed? must they have manage managed?
V-ing perfect
must I have been manage managing? must you have been manage managing? must she have been manage managing? must we have been manage managing? must you have been manage managing? must they have been manage managing?
Interro-negative form
Simple form
mustn't I manage manage? mustn't you manage manage? mustn't she manage manage? mustn't we manage manage? mustn't you manage manage? mustn't they manage manage?
V-ing form
mustn't I be manage managing? mustn't you be manage managing? mustn't she be manage managing? mustn't we be manage managing? mustn't you be manage managing? mustn't they be manage managing?
Perfect
mustn't I have manage managed? mustn't you have manage managed? mustn't she have manage managed? mustn't we have manage managed? mustn't you have manage managed? mustn't they have manage managed?
V-ing perfect
mustn't I have been manage managing? mustn't you have been manage managing? mustn't she have been manage managing? mustn't we have been manage managing? mustn't you have been manage managing? mustn't they have been manage managing?