English verb conjugation
MUST AFFECT

Regular verb: affect - affected - affected

Affirmation

Simple form	V-ing form
I must affect you must affect he must affect we must affect you must affect they must affect	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	V-ing 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	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	V-ing form
I must not affect you must not affect he must not affect we must not affect you must not affect they must not affect	I must not be affecting you must not be affecting he must not be affecting we must not be affecting you must not be affecting they must not be affecting
Perfect	V-ing perfect
I must not have affected you must not have affected he must not have affected we must not have affected you must not have affected they must not have affected	I must not have been affecting you must not have been affecting he must not have been affecting we must not have been affecting you must not have been affecting they must not have been affecting

Interrogative form

Simple form	V-ing form
must I affect? must you affect? must he affect? must we affect? must you affect? must they affect?	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	V-ing 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?	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	V-ing form
must I not affect? must you not affect? must he not affect? must we not affect? must you not affect? must they not affect?	must I not be affecting? must you not be affecting? must he not be affecting? must we not be affecting? must you not be affecting? must they not be affecting?
Perfect	V-ing perfect
must I not have affected? must you not have affected? must he not have affected? must we not have affected? must you not have affected? must they not have affected?	must I not have been affecting? must you not have been affecting? must he not have been affecting? must we not have been affecting? must you not have been affecting? must they not have been affecting?