English verb conjugation
MUST REFUTE

Regular verb: refute - refuted - refuted

Affirmation

Simple form	V-ing form
I must refute you must refute he must refute we must refute you must refute they must refute	I must be refuting you must be refuting he must be refuting we must be refuting you must be refuting they must be refuting
Perfect	V-ing perfect
I must have refuted you must have refuted he must have refuted we must have refuted you must have refuted they must have refuted	I must have been refuting you must have been refuting he must have been refuting we must have been refuting you must have been refuting they must have been refuting

Negation

Simple form	V-ing form
I must not refute you must not refute he must not refute we must not refute you must not refute they must not refute	I must not be refuting you must not be refuting he must not be refuting we must not be refuting you must not be refuting they must not be refuting
Perfect	V-ing perfect
I must not have refuted you must not have refuted he must not have refuted we must not have refuted you must not have refuted they must not have refuted	I must not have been refuting you must not have been refuting he must not have been refuting we must not have been refuting you must not have been refuting they must not have been refuting

Interrogative form

Simple form	V-ing form
must I refute? must you refute? must he refute? must we refute? must you refute? must they refute?	must I be refuting? must you be refuting? must he be refuting? must we be refuting? must you be refuting? must they be refuting?
Perfect	V-ing perfect
must I have refuted? must you have refuted? must he have refuted? must we have refuted? must you have refuted? must they have refuted?	must I have been refuting? must you have been refuting? must he have been refuting? must we have been refuting? must you have been refuting? must they have been refuting?

Interro-negative form

Simple form	V-ing form
must I not refute? must you not refute? must he not refute? must we not refute? must you not refute? must they not refute?	must I not be refuting? must you not be refuting? must he not be refuting? must we not be refuting? must you not be refuting? must they not be refuting?
Perfect	V-ing perfect
must I not have refuted? must you not have refuted? must he not have refuted? must we not have refuted? must you not have refuted? must they not have refuted?	must I not have been refuting? must you not have been refuting? must he not have been refuting? must we not have been refuting? must you not have been refuting? must they not have been refuting?