English verb conjugation
MUST ROUST

Regular verb: roust - rousted - rousted

Affirmation

Simple form	V-ing form
I must roust you must roust he must roust we must roust you must roust they must roust	I must be rousting you must be rousting he must be rousting we must be rousting you must be rousting they must be rousting
Perfect	V-ing perfect
I must have rousted you must have rousted he must have rousted we must have rousted you must have rousted they must have rousted	I must have been rousting you must have been rousting he must have been rousting we must have been rousting you must have been rousting they must have been rousting

Negation

Simple form	V-ing form
I mustn't roust you mustn't roust he mustn't roust we mustn't roust you mustn't roust they mustn't roust	I mustn't be rousting you mustn't be rousting he mustn't be rousting we mustn't be rousting you mustn't be rousting they mustn't be rousting
Perfect	V-ing perfect
I mustn't have rousted you mustn't have rousted he mustn't have rousted we mustn't have rousted you mustn't have rousted they mustn't have rousted	I mustn't have been rousting you mustn't have been rousting he mustn't have been rousting we mustn't have been rousting you mustn't have been rousting they mustn't have been rousting

Interrogative form

Simple form	V-ing form
must I roust? must you roust? must he roust? must we roust? must you roust? must they roust?	must I be rousting? must you be rousting? must he be rousting? must we be rousting? must you be rousting? must they be rousting?
Perfect	V-ing perfect
must I have rousted? must you have rousted? must he have rousted? must we have rousted? must you have rousted? must they have rousted?	must I have been rousting? must you have been rousting? must he have been rousting? must we have been rousting? must you have been rousting? must they have been rousting?

Interro-negative form

Simple form	V-ing form
mustn't I roust? mustn't you roust? mustn't he roust? mustn't we roust? mustn't you roust? mustn't they roust?	mustn't I be rousting? mustn't you be rousting? mustn't he be rousting? mustn't we be rousting? mustn't you be rousting? mustn't they be rousting?
Perfect	V-ing perfect
mustn't I have rousted? mustn't you have rousted? mustn't he have rousted? mustn't we have rousted? mustn't you have rousted? mustn't they have rousted?	mustn't I have been rousting? mustn't you have been rousting? mustn't he have been rousting? mustn't we have been rousting? mustn't you have been rousting? mustn't they have been rousting?