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