English verb conjugation
MUST ENDOW

Regular verb: endow - endowed - endowed

Affirmation

Simple form	V-ing form
I must endow you must endow he must endow we must endow you must endow they must endow	I must be endowing you must be endowing he must be endowing we must be endowing you must be endowing they must be endowing
Perfect	V-ing perfect
I must have endowed you must have endowed he must have endowed we must have endowed you must have endowed they must have endowed	I must have been endowing you must have been endowing he must have been endowing we must have been endowing you must have been endowing they must have been endowing

Negation

Simple form	V-ing form
I must not endow you must not endow he must not endow we must not endow you must not endow they must not endow	I must not be endowing you must not be endowing he must not be endowing we must not be endowing you must not be endowing they must not be endowing
Perfect	V-ing perfect
I must not have endowed you must not have endowed he must not have endowed we must not have endowed you must not have endowed they must not have endowed	I must not have been endowing you must not have been endowing he must not have been endowing we must not have been endowing you must not have been endowing they must not have been endowing

Interrogative form

Simple form	V-ing form
must I endow? must you endow? must he endow? must we endow? must you endow? must they endow?	must I be endowing? must you be endowing? must he be endowing? must we be endowing? must you be endowing? must they be endowing?
Perfect	V-ing perfect
must I have endowed? must you have endowed? must he have endowed? must we have endowed? must you have endowed? must they have endowed?	must I have been endowing? must you have been endowing? must he have been endowing? must we have been endowing? must you have been endowing? must they have been endowing?

Interro-negative form

Simple form	V-ing form
must I not endow? must you not endow? must he not endow? must we not endow? must you not endow? must they not endow?	must I not be endowing? must you not be endowing? must he not be endowing? must we not be endowing? must you not be endowing? must they not be endowing?
Perfect	V-ing perfect
must I not have endowed? must you not have endowed? must he not have endowed? must we not have endowed? must you not have endowed? must they not have endowed?	must I not have been endowing? must you not have been endowing? must he not have been endowing? must we not have been endowing? must you not have been endowing? must they not have been endowing?