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