English verb conjugation
MUST FRIT

Regular verb: frit - frited - frited

Affirmation

Simple form	V-ing form
I must frit you must frit she must frit we must frit you must frit they must frit	I must be friting you must be friting she must be friting we must be friting you must be friting they must be friting
Perfect	V-ing perfect
I must have frited you must have frited she must have frited we must have frited you must have frited they must have frited	I must have been friting you must have been friting she must have been friting we must have been friting you must have been friting they must have been friting

Negation

Simple form	V-ing form
I mustn't frit you mustn't frit she mustn't frit we mustn't frit you mustn't frit they mustn't frit	I mustn't be friting you mustn't be friting she mustn't be friting we mustn't be friting you mustn't be friting they mustn't be friting
Perfect	V-ing perfect
I mustn't have frited you mustn't have frited she mustn't have frited we mustn't have frited you mustn't have frited they mustn't have frited	I mustn't have been friting you mustn't have been friting she mustn't have been friting we mustn't have been friting you mustn't have been friting they mustn't have been friting

Interrogative form

Simple form	V-ing form
must I frit? must you frit? must she frit? must we frit? must you frit? must they frit?	must I be friting? must you be friting? must she be friting? must we be friting? must you be friting? must they be friting?
Perfect	V-ing perfect
must I have frited? must you have frited? must she have frited? must we have frited? must you have frited? must they have frited?	must I have been friting? must you have been friting? must she have been friting? must we have been friting? must you have been friting? must they have been friting?

Interro-negative form

Simple form	V-ing form
mustn't I frit? mustn't you frit? mustn't she frit? mustn't we frit? mustn't you frit? mustn't they frit?	mustn't I be friting? mustn't you be friting? mustn't she be friting? mustn't we be friting? mustn't you be friting? mustn't they be friting?
Perfect	V-ing perfect
mustn't I have frited? mustn't you have frited? mustn't she have frited? mustn't we have frited? mustn't you have frited? mustn't they have frited?	mustn't I have been friting? mustn't you have been friting? mustn't she have been friting? mustn't we have been friting? mustn't you have been friting? mustn't they have been friting?