English verb conjugation
MUST LANGUISH

Regular verb: languish - languished - languished

Affirmation

Simple form	V-ing form
I must languish you must languish she must languish we must languish you must languish they must languish	I must be languishing you must be languishing she must be languishing we must be languishing you must be languishing they must be languishing
Perfect	V-ing perfect
I must have languished you must have languished she must have languished we must have languished you must have languished they must have languished	I must have been languishing you must have been languishing she must have been languishing we must have been languishing you must have been languishing they must have been languishing

Negation

Simple form	V-ing form
I mustn't languish you mustn't languish she mustn't languish we mustn't languish you mustn't languish they mustn't languish	I mustn't be languishing you mustn't be languishing she mustn't be languishing we mustn't be languishing you mustn't be languishing they mustn't be languishing
Perfect	V-ing perfect
I mustn't have languished you mustn't have languished she mustn't have languished we mustn't have languished you mustn't have languished they mustn't have languished	I mustn't have been languishing you mustn't have been languishing she mustn't have been languishing we mustn't have been languishing you mustn't have been languishing they mustn't have been languishing

Interrogative form

Simple form	V-ing form
must I languish? must you languish? must she languish? must we languish? must you languish? must they languish?	must I be languishing? must you be languishing? must she be languishing? must we be languishing? must you be languishing? must they be languishing?
Perfect	V-ing perfect
must I have languished? must you have languished? must she have languished? must we have languished? must you have languished? must they have languished?	must I have been languishing? must you have been languishing? must she have been languishing? must we have been languishing? must you have been languishing? must they have been languishing?

Interro-negative form

Simple form	V-ing form
mustn't I languish? mustn't you languish? mustn't she languish? mustn't we languish? mustn't you languish? mustn't they languish?	mustn't I be languishing? mustn't you be languishing? mustn't she be languishing? mustn't we be languishing? mustn't you be languishing? mustn't they be languishing?
Perfect	V-ing perfect
mustn't I have languished? mustn't you have languished? mustn't she have languished? mustn't we have languished? mustn't you have languished? mustn't they have languished?	mustn't I have been languishing? mustn't you have been languishing? mustn't she have been languishing? mustn't we have been languishing? mustn't you have been languishing? mustn't they have been languishing?