English verb conjugation
MUST ENDURE

Regular verb: endure - endured - endured

Affirmation

Simple form	V-ing form
I must endure you must endure he must endure we must endure you must endure they must endure	I must be enduring you must be enduring he must be enduring we must be enduring you must be enduring they must be enduring
Perfect	V-ing perfect
I must have endured you must have endured he must have endured we must have endured you must have endured they must have endured	I must have been enduring you must have been enduring he must have been enduring we must have been enduring you must have been enduring they must have been enduring

Negation

Simple form	V-ing form
I must not endure you must not endure he must not endure we must not endure you must not endure they must not endure	I must not be enduring you must not be enduring he must not be enduring we must not be enduring you must not be enduring they must not be enduring
Perfect	V-ing perfect
I must not have endured you must not have endured he must not have endured we must not have endured you must not have endured they must not have endured	I must not have been enduring you must not have been enduring he must not have been enduring we must not have been enduring you must not have been enduring they must not have been enduring

Interrogative form

Simple form	V-ing form
must I endure? must you endure? must he endure? must we endure? must you endure? must they endure?	must I be enduring? must you be enduring? must he be enduring? must we be enduring? must you be enduring? must they be enduring?
Perfect	V-ing perfect
must I have endured? must you have endured? must he have endured? must we have endured? must you have endured? must they have endured?	must I have been enduring? must you have been enduring? must he have been enduring? must we have been enduring? must you have been enduring? must they have been enduring?

Interro-negative form

Simple form	V-ing form
must I not endure? must you not endure? must he not endure? must we not endure? must you not endure? must they not endure?	must I not be enduring? must you not be enduring? must he not be enduring? must we not be enduring? must you not be enduring? must they not be enduring?
Perfect	V-ing perfect
must I not have endured? must you not have endured? must he not have endured? must we not have endured? must you not have endured? must they not have endured?	must I not have been enduring? must you not have been enduring? must he not have been enduring? must we not have been enduring? must you not have been enduring? must they not have been enduring?