English verb conjugation
MUST HOUSEBREAK

Irregular verb: housebreak - housebroke - housebroken

Affirmation

Simple form	V-ing form
I must housebreak you must housebreak he must housebreak we must housebreak you must housebreak they must housebreak	I must be housebreaking you must be housebreaking he must be housebreaking we must be housebreaking you must be housebreaking they must be housebreaking
Perfect	V-ing perfect
I must have housebroken you must have housebroken he must have housebroken we must have housebroken you must have housebroken they must have housebroken	I must have been housebreaking you must have been housebreaking he must have been housebreaking we must have been housebreaking you must have been housebreaking they must have been housebreaking

Negation

Simple form	V-ing form
I mustn't housebreak you mustn't housebreak he mustn't housebreak we mustn't housebreak you mustn't housebreak they mustn't housebreak	I mustn't be housebreaking you mustn't be housebreaking he mustn't be housebreaking we mustn't be housebreaking you mustn't be housebreaking they mustn't be housebreaking
Perfect	V-ing perfect
I mustn't have housebroken you mustn't have housebroken he mustn't have housebroken we mustn't have housebroken you mustn't have housebroken they mustn't have housebroken	I mustn't have been housebreaking you mustn't have been housebreaking he mustn't have been housebreaking we mustn't have been housebreaking you mustn't have been housebreaking they mustn't have been housebreaking

Interrogative form

Simple form	V-ing form
must I housebreak? must you housebreak? must he housebreak? must we housebreak? must you housebreak? must they housebreak?	must I be housebreaking? must you be housebreaking? must he be housebreaking? must we be housebreaking? must you be housebreaking? must they be housebreaking?
Perfect	V-ing perfect
must I have housebroken? must you have housebroken? must he have housebroken? must we have housebroken? must you have housebroken? must they have housebroken?	must I have been housebreaking? must you have been housebreaking? must he have been housebreaking? must we have been housebreaking? must you have been housebreaking? must they have been housebreaking?

Interro-negative form

Simple form	V-ing form
mustn't I housebreak? mustn't you housebreak? mustn't he housebreak? mustn't we housebreak? mustn't you housebreak? mustn't they housebreak?	mustn't I be housebreaking? mustn't you be housebreaking? mustn't he be housebreaking? mustn't we be housebreaking? mustn't you be housebreaking? mustn't they be housebreaking?
Perfect	V-ing perfect
mustn't I have housebroken? mustn't you have housebroken? mustn't he have housebroken? mustn't we have housebroken? mustn't you have housebroken? mustn't they have housebroken?	mustn't I have been housebreaking? mustn't you have been housebreaking? mustn't he have been housebreaking? mustn't we have been housebreaking? mustn't you have been housebreaking? mustn't they have been housebreaking?