English verb conjugation
MUST EXSERT

Regular verb: exsert - exserted - exserted

Affirmation

Simple form	V-ing form
I must exsert you must exsert he must exsert we must exsert you must exsert they must exsert	I must be exserting you must be exserting he must be exserting we must be exserting you must be exserting they must be exserting
Perfect	V-ing perfect
I must have exserted you must have exserted he must have exserted we must have exserted you must have exserted they must have exserted	I must have been exserting you must have been exserting he must have been exserting we must have been exserting you must have been exserting they must have been exserting

Negation

Simple form	V-ing form
I mustn't exsert you mustn't exsert he mustn't exsert we mustn't exsert you mustn't exsert they mustn't exsert	I mustn't be exserting you mustn't be exserting he mustn't be exserting we mustn't be exserting you mustn't be exserting they mustn't be exserting
Perfect	V-ing perfect
I mustn't have exserted you mustn't have exserted he mustn't have exserted we mustn't have exserted you mustn't have exserted they mustn't have exserted	I mustn't have been exserting you mustn't have been exserting he mustn't have been exserting we mustn't have been exserting you mustn't have been exserting they mustn't have been exserting

Interrogative form

Simple form	V-ing form
must I exsert? must you exsert? must he exsert? must we exsert? must you exsert? must they exsert?	must I be exserting? must you be exserting? must he be exserting? must we be exserting? must you be exserting? must they be exserting?
Perfect	V-ing perfect
must I have exserted? must you have exserted? must he have exserted? must we have exserted? must you have exserted? must they have exserted?	must I have been exserting? must you have been exserting? must he have been exserting? must we have been exserting? must you have been exserting? must they have been exserting?

Interro-negative form

Simple form	V-ing form
mustn't I exsert? mustn't you exsert? mustn't he exsert? mustn't we exsert? mustn't you exsert? mustn't they exsert?	mustn't I be exserting? mustn't you be exserting? mustn't he be exserting? mustn't we be exserting? mustn't you be exserting? mustn't they be exserting?
Perfect	V-ing perfect
mustn't I have exserted? mustn't you have exserted? mustn't he have exserted? mustn't we have exserted? mustn't you have exserted? mustn't they have exserted?	mustn't I have been exserting? mustn't you have been exserting? mustn't he have been exserting? mustn't we have been exserting? mustn't you have been exserting? mustn't they have been exserting?