English verb conjugation
MUST OUTBURN

Regular verb: outburn - outburned - outburned

Affirmation

Simple form	V-ing form
I must outburn you must outburn he must outburn we must outburn you must outburn they must outburn	I must be outburning you must be outburning he must be outburning we must be outburning you must be outburning they must be outburning
Perfect	V-ing perfect
I must have outburned you must have outburned he must have outburned we must have outburned you must have outburned they must have outburned	I must have been outburning you must have been outburning he must have been outburning we must have been outburning you must have been outburning they must have been outburning

Negation

Simple form	V-ing form
I must not outburn you must not outburn he must not outburn we must not outburn you must not outburn they must not outburn	I must not be outburning you must not be outburning he must not be outburning we must not be outburning you must not be outburning they must not be outburning
Perfect	V-ing perfect
I must not have outburned you must not have outburned he must not have outburned we must not have outburned you must not have outburned they must not have outburned	I must not have been outburning you must not have been outburning he must not have been outburning we must not have been outburning you must not have been outburning they must not have been outburning

Interrogative form

Simple form	V-ing form
must I outburn? must you outburn? must he outburn? must we outburn? must you outburn? must they outburn?	must I be outburning? must you be outburning? must he be outburning? must we be outburning? must you be outburning? must they be outburning?
Perfect	V-ing perfect
must I have outburned? must you have outburned? must he have outburned? must we have outburned? must you have outburned? must they have outburned?	must I have been outburning? must you have been outburning? must he have been outburning? must we have been outburning? must you have been outburning? must they have been outburning?

Interro-negative form

Simple form	V-ing form
must I not outburn? must you not outburn? must he not outburn? must we not outburn? must you not outburn? must they not outburn?	must I not be outburning? must you not be outburning? must he not be outburning? must we not be outburning? must you not be outburning? must they not be outburning?
Perfect	V-ing perfect
must I not have outburned? must you not have outburned? must he not have outburned? must we not have outburned? must you not have outburned? must they not have outburned?	must I not have been outburning? must you not have been outburning? must he not have been outburning? must we not have been outburning? must you not have been outburning? must they not have been outburning?