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