English verb conjugation
MUST TARNISH

Regular verb: tarnish - tarnished - tarnished

Affirmation

Simple form	V-ing form
I must tarnish you must tarnish she must tarnish we must tarnish you must tarnish they must tarnish	I must be tarnishing you must be tarnishing she 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 she 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 she 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 mustn't tarnish you mustn't tarnish she mustn't tarnish we mustn't tarnish you mustn't tarnish they mustn't tarnish	I mustn't be tarnishing you mustn't be tarnishing she mustn't be tarnishing we mustn't be tarnishing you mustn't be tarnishing they mustn't be tarnishing
Perfect	V-ing perfect
I mustn't have tarnished you mustn't have tarnished she mustn't have tarnished we mustn't have tarnished you mustn't have tarnished they mustn't have tarnished	I mustn't have been tarnishing you mustn't have been tarnishing she mustn't have been tarnishing we mustn't have been tarnishing you mustn't have been tarnishing they mustn't have been tarnishing

Interrogative form

Simple form	V-ing form
must I tarnish? must you tarnish? must she tarnish? must we tarnish? must you tarnish? must they tarnish?	must I be tarnishing? must you be tarnishing? must she 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 she 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 she 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
mustn't I tarnish? mustn't you tarnish? mustn't she tarnish? mustn't we tarnish? mustn't you tarnish? mustn't they tarnish?	mustn't I be tarnishing? mustn't you be tarnishing? mustn't she be tarnishing? mustn't we be tarnishing? mustn't you be tarnishing? mustn't they be tarnishing?
Perfect	V-ing perfect
mustn't I have tarnished? mustn't you have tarnished? mustn't she have tarnished? mustn't we have tarnished? mustn't you have tarnished? mustn't they have tarnished?	mustn't I have been tarnishing? mustn't you have been tarnishing? mustn't she have been tarnishing? mustn't we have been tarnishing? mustn't you have been tarnishing? mustn't they have been tarnishing?