English verb conjugation
MUST BURST

Irregular verb: burst - burst - burst

Affirmation

Simple form	V-ing form
I must burst you must burst he must burst we must burst you must burst they must burst	I must be bursting you must be bursting he must be bursting we must be bursting you must be bursting they must be bursting
Perfect	V-ing perfect
I must have burst you must have burst he must have burst we must have burst you must have burst they must have burst	I must have been bursting you must have been bursting he must have been bursting we must have been bursting you must have been bursting they must have been bursting

Negation

Simple form	V-ing form
I mustn't burst you mustn't burst he mustn't burst we mustn't burst you mustn't burst they mustn't burst	I mustn't be bursting you mustn't be bursting he mustn't be bursting we mustn't be bursting you mustn't be bursting they mustn't be bursting
Perfect	V-ing perfect
I mustn't have burst you mustn't have burst he mustn't have burst we mustn't have burst you mustn't have burst they mustn't have burst	I mustn't have been bursting you mustn't have been bursting he mustn't have been bursting we mustn't have been bursting you mustn't have been bursting they mustn't have been bursting

Interrogative form

Simple form	V-ing form
must I burst? must you burst? must he burst? must we burst? must you burst? must they burst?	must I be bursting? must you be bursting? must he be bursting? must we be bursting? must you be bursting? must they be bursting?
Perfect	V-ing perfect
must I have burst? must you have burst? must he have burst? must we have burst? must you have burst? must they have burst?	must I have been bursting? must you have been bursting? must he have been bursting? must we have been bursting? must you have been bursting? must they have been bursting?

Interro-negative form

Simple form	V-ing form
mustn't I burst? mustn't you burst? mustn't he burst? mustn't we burst? mustn't you burst? mustn't they burst?	mustn't I be bursting? mustn't you be bursting? mustn't he be bursting? mustn't we be bursting? mustn't you be bursting? mustn't they be bursting?
Perfect	V-ing perfect
mustn't I have burst? mustn't you have burst? mustn't he have burst? mustn't we have burst? mustn't you have burst? mustn't they have burst?	mustn't I have been bursting? mustn't you have been bursting? mustn't he have been bursting? mustn't we have been bursting? mustn't you have been bursting? mustn't they have been bursting?