English verb conjugation
MUST POWWOW

Regular verb: powwow - powwowed - powwowed

Affirmation

Simple form	V-ing form
I must powwow you must powwow he must powwow we must powwow you must powwow they must powwow	I must be powwowing you must be powwowing he must be powwowing we must be powwowing you must be powwowing they must be powwowing
Perfect	V-ing perfect
I must have powwowed you must have powwowed he must have powwowed we must have powwowed you must have powwowed they must have powwowed	I must have been powwowing you must have been powwowing he must have been powwowing we must have been powwowing you must have been powwowing they must have been powwowing

Negation

Simple form	V-ing form
I must not powwow you must not powwow he must not powwow we must not powwow you must not powwow they must not powwow	I must not be powwowing you must not be powwowing he must not be powwowing we must not be powwowing you must not be powwowing they must not be powwowing
Perfect	V-ing perfect
I must not have powwowed you must not have powwowed he must not have powwowed we must not have powwowed you must not have powwowed they must not have powwowed	I must not have been powwowing you must not have been powwowing he must not have been powwowing we must not have been powwowing you must not have been powwowing they must not have been powwowing

Interrogative form

Simple form	V-ing form
must I powwow? must you powwow? must he powwow? must we powwow? must you powwow? must they powwow?	must I be powwowing? must you be powwowing? must he be powwowing? must we be powwowing? must you be powwowing? must they be powwowing?
Perfect	V-ing perfect
must I have powwowed? must you have powwowed? must he have powwowed? must we have powwowed? must you have powwowed? must they have powwowed?	must I have been powwowing? must you have been powwowing? must he have been powwowing? must we have been powwowing? must you have been powwowing? must they have been powwowing?

Interro-negative form

Simple form	V-ing form
must I not powwow? must you not powwow? must he not powwow? must we not powwow? must you not powwow? must they not powwow?	must I not be powwowing? must you not be powwowing? must he not be powwowing? must we not be powwowing? must you not be powwowing? must they not be powwowing?
Perfect	V-ing perfect
must I not have powwowed? must you not have powwowed? must he not have powwowed? must we not have powwowed? must you not have powwowed? must they not have powwowed?	must I not have been powwowing? must you not have been powwowing? must he not have been powwowing? must we not have been powwowing? must you not have been powwowing? must they not have been powwowing?