English verb conjugation
MUST BURNISH

Regular verb: burnish - burnished - burnished

Affirmation

Simple form	V-ing form
I must burnish you must burnish he must burnish we must burnish you must burnish they must burnish	I must be burnishing you must be burnishing he must be burnishing we must be burnishing you must be burnishing they must be burnishing
Perfect	V-ing perfect
I must have burnished you must have burnished he must have burnished we must have burnished you must have burnished they must have burnished	I must have been burnishing you must have been burnishing he must have been burnishing we must have been burnishing you must have been burnishing they must have been burnishing

Negation

Simple form	V-ing form
I must not burnish you must not burnish he must not burnish we must not burnish you must not burnish they must not burnish	I must not be burnishing you must not be burnishing he must not be burnishing we must not be burnishing you must not be burnishing they must not be burnishing
Perfect	V-ing perfect
I must not have burnished you must not have burnished he must not have burnished we must not have burnished you must not have burnished they must not have burnished	I must not have been burnishing you must not have been burnishing he must not have been burnishing we must not have been burnishing you must not have been burnishing they must not have been burnishing

Interrogative form

Simple form	V-ing form
must I burnish? must you burnish? must he burnish? must we burnish? must you burnish? must they burnish?	must I be burnishing? must you be burnishing? must he be burnishing? must we be burnishing? must you be burnishing? must they be burnishing?
Perfect	V-ing perfect
must I have burnished? must you have burnished? must he have burnished? must we have burnished? must you have burnished? must they have burnished?	must I have been burnishing? must you have been burnishing? must he have been burnishing? must we have been burnishing? must you have been burnishing? must they have been burnishing?

Interro-negative form

Simple form	V-ing form
must I not burnish? must you not burnish? must he not burnish? must we not burnish? must you not burnish? must they not burnish?	must I not be burnishing? must you not be burnishing? must he not be burnishing? must we not be burnishing? must you not be burnishing? must they not be burnishing?
Perfect	V-ing perfect
must I not have burnished? must you not have burnished? must he not have burnished? must we not have burnished? must you not have burnished? must they not have burnished?	must I not have been burnishing? must you not have been burnishing? must he not have been burnishing? must we not have been burnishing? must you not have been burnishing? must they not have been burnishing?