English verb conjugation
MUST QUESTION

Regular verb: question - questioned - questioned

Affirmation

Simple form	V-ing form
I must question you must question he must question we must question you must question they must question	I must be questioning you must be questioning he must be questioning we must be questioning you must be questioning they must be questioning
Perfect	V-ing perfect
I must have questioned you must have questioned he must have questioned we must have questioned you must have questioned they must have questioned	I must have been questioning you must have been questioning he must have been questioning we must have been questioning you must have been questioning they must have been questioning

Negation

Simple form	V-ing form
I must not question you must not question he must not question we must not question you must not question they must not question	I must not be questioning you must not be questioning he must not be questioning we must not be questioning you must not be questioning they must not be questioning
Perfect	V-ing perfect
I must not have questioned you must not have questioned he must not have questioned we must not have questioned you must not have questioned they must not have questioned	I must not have been questioning you must not have been questioning he must not have been questioning we must not have been questioning you must not have been questioning they must not have been questioning

Interrogative form

Simple form	V-ing form
must I question? must you question? must he question? must we question? must you question? must they question?	must I be questioning? must you be questioning? must he be questioning? must we be questioning? must you be questioning? must they be questioning?
Perfect	V-ing perfect
must I have questioned? must you have questioned? must he have questioned? must we have questioned? must you have questioned? must they have questioned?	must I have been questioning? must you have been questioning? must he have been questioning? must we have been questioning? must you have been questioning? must they have been questioning?

Interro-negative form

Simple form	V-ing form
must I not question? must you not question? must he not question? must we not question? must you not question? must they not question?	must I not be questioning? must you not be questioning? must he not be questioning? must we not be questioning? must you not be questioning? must they not be questioning?
Perfect	V-ing perfect
must I not have questioned? must you not have questioned? must he not have questioned? must we not have questioned? must you not have questioned? must they not have questioned?	must I not have been questioning? must you not have been questioning? must he not have been questioning? must we not have been questioning? must you not have been questioning? must they not have been questioning?