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 mustn't endow you mustn't endow he mustn't endow we mustn't endow you mustn't endow they mustn't endow	I mustn't be endowing you mustn't be endowing he mustn't be endowing we mustn't be endowing you mustn't be endowing they mustn't be endowing
Perfect	V-ing perfect
I mustn't have endowed you mustn't have endowed he mustn't have endowed we mustn't have endowed you mustn't have endowed they mustn't have endowed	I mustn't have been endowing you mustn't have been endowing he mustn't have been endowing we mustn't have been endowing you mustn't have been endowing they mustn't 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
mustn't I endow? mustn't you endow? mustn't he endow? mustn't we endow? mustn't you endow? mustn't they endow?	mustn't I be endowing? mustn't you be endowing? mustn't he be endowing? mustn't we be endowing? mustn't you be endowing? mustn't they be endowing?
Perfect	V-ing perfect
mustn't I have endowed? mustn't you have endowed? mustn't he have endowed? mustn't we have endowed? mustn't you have endowed? mustn't they have endowed?	mustn't I have been endowing? mustn't you have been endowing? mustn't he have been endowing? mustn't we have been endowing? mustn't you have been endowing? mustn't they have been endowing?