English verb conjugation
MUST TARNISH

Regular verb: tarnish - tarnished - tarnished

Affirmation

Simple form	V-ing form
I must tarnish you must tarnish he must tarnish we must tarnish you must tarnish they must tarnish	I must be tarnishing you must be tarnishing he must be tarnishing we must be tarnishing you must be tarnishing they must be tarnishing
Perfect	V-ing perfect
I must have tarnished you must have tarnished he must have tarnished we must have tarnished you must have tarnished they must have tarnished	I must have been tarnishing you must have been tarnishing he must have been tarnishing we must have been tarnishing you must have been tarnishing they must have been tarnishing

Negation

Simple form	V-ing form
I must not tarnish you must not tarnish he must not tarnish we must not tarnish you must not tarnish they must not tarnish	I must not be tarnishing you must not be tarnishing he must not be tarnishing we must not be tarnishing you must not be tarnishing they must not be tarnishing
Perfect	V-ing perfect
I must not have tarnished you must not have tarnished he must not have tarnished we must not have tarnished you must not have tarnished they must not have tarnished	I must not have been tarnishing you must not have been tarnishing he must not have been tarnishing we must not have been tarnishing you must not have been tarnishing they must not have been tarnishing

Interrogative form

Simple form	V-ing form
must I tarnish? must you tarnish? must he tarnish? must we tarnish? must you tarnish? must they tarnish?	must I be tarnishing? must you be tarnishing? must he be tarnishing? must we be tarnishing? must you be tarnishing? must they be tarnishing?
Perfect	V-ing perfect
must I have tarnished? must you have tarnished? must he have tarnished? must we have tarnished? must you have tarnished? must they have tarnished?	must I have been tarnishing? must you have been tarnishing? must he have been tarnishing? must we have been tarnishing? must you have been tarnishing? must they have been tarnishing?

Interro-negative form

Simple form	V-ing form
must I not tarnish? must you not tarnish? must he not tarnish? must we not tarnish? must you not tarnish? must they not tarnish?	must I not be tarnishing? must you not be tarnishing? must he not be tarnishing? must we not be tarnishing? must you not be tarnishing? must they not be tarnishing?
Perfect	V-ing perfect
must I not have tarnished? must you not have tarnished? must he not have tarnished? must we not have tarnished? must you not have tarnished? must they not have tarnished?	must I not have been tarnishing? must you not have been tarnishing? must he not have been tarnishing? must we not have been tarnishing? must you not have been tarnishing? must they not have been tarnishing?