English verb conjugation
MUST OVERFISH

Regular verb: overfish - overfished - overfished

Affirmation

Simple form	V-ing form
I must overfish you must overfish she must overfish we must overfish you must overfish they must overfish	I must be overfishing you must be overfishing she must be overfishing we must be overfishing you must be overfishing they must be overfishing
Perfect	V-ing perfect
I must have overfished you must have overfished she must have overfished we must have overfished you must have overfished they must have overfished	I must have been overfishing you must have been overfishing she must have been overfishing we must have been overfishing you must have been overfishing they must have been overfishing

Negation

Simple form	V-ing form
I mustn't overfish you mustn't overfish she mustn't overfish we mustn't overfish you mustn't overfish they mustn't overfish	I mustn't be overfishing you mustn't be overfishing she mustn't be overfishing we mustn't be overfishing you mustn't be overfishing they mustn't be overfishing
Perfect	V-ing perfect
I mustn't have overfished you mustn't have overfished she mustn't have overfished we mustn't have overfished you mustn't have overfished they mustn't have overfished	I mustn't have been overfishing you mustn't have been overfishing she mustn't have been overfishing we mustn't have been overfishing you mustn't have been overfishing they mustn't have been overfishing

Interrogative form

Simple form	V-ing form
must I overfish? must you overfish? must she overfish? must we overfish? must you overfish? must they overfish?	must I be overfishing? must you be overfishing? must she be overfishing? must we be overfishing? must you be overfishing? must they be overfishing?
Perfect	V-ing perfect
must I have overfished? must you have overfished? must she have overfished? must we have overfished? must you have overfished? must they have overfished?	must I have been overfishing? must you have been overfishing? must she have been overfishing? must we have been overfishing? must you have been overfishing? must they have been overfishing?

Interro-negative form

Simple form	V-ing form
mustn't I overfish? mustn't you overfish? mustn't she overfish? mustn't we overfish? mustn't you overfish? mustn't they overfish?	mustn't I be overfishing? mustn't you be overfishing? mustn't she be overfishing? mustn't we be overfishing? mustn't you be overfishing? mustn't they be overfishing?
Perfect	V-ing perfect
mustn't I have overfished? mustn't you have overfished? mustn't she have overfished? mustn't we have overfished? mustn't you have overfished? mustn't they have overfished?	mustn't I have been overfishing? mustn't you have been overfishing? mustn't she have been overfishing? mustn't we have been overfishing? mustn't you have been overfishing? mustn't they have been overfishing?