English verb conjugation
MUST PORPOISE

Regular verb: porpoise - porpoised - porpoised

Affirmation

Simple form	V-ing form
I must porpoise you must porpoise he must porpoise we must porpoise you must porpoise they must porpoise	I must be porpoising you must be porpoising he must be porpoising we must be porpoising you must be porpoising they must be porpoising
Perfect	V-ing perfect
I must have porpoised you must have porpoised he must have porpoised we must have porpoised you must have porpoised they must have porpoised	I must have been porpoising you must have been porpoising he must have been porpoising we must have been porpoising you must have been porpoising they must have been porpoising

Negation

Simple form	V-ing form
I mustn't porpoise you mustn't porpoise he mustn't porpoise we mustn't porpoise you mustn't porpoise they mustn't porpoise	I mustn't be porpoising you mustn't be porpoising he mustn't be porpoising we mustn't be porpoising you mustn't be porpoising they mustn't be porpoising
Perfect	V-ing perfect
I mustn't have porpoised you mustn't have porpoised he mustn't have porpoised we mustn't have porpoised you mustn't have porpoised they mustn't have porpoised	I mustn't have been porpoising you mustn't have been porpoising he mustn't have been porpoising we mustn't have been porpoising you mustn't have been porpoising they mustn't have been porpoising

Interrogative form

Simple form	V-ing form
must I porpoise? must you porpoise? must he porpoise? must we porpoise? must you porpoise? must they porpoise?	must I be porpoising? must you be porpoising? must he be porpoising? must we be porpoising? must you be porpoising? must they be porpoising?
Perfect	V-ing perfect
must I have porpoised? must you have porpoised? must he have porpoised? must we have porpoised? must you have porpoised? must they have porpoised?	must I have been porpoising? must you have been porpoising? must he have been porpoising? must we have been porpoising? must you have been porpoising? must they have been porpoising?

Interro-negative form

Simple form	V-ing form
mustn't I porpoise? mustn't you porpoise? mustn't he porpoise? mustn't we porpoise? mustn't you porpoise? mustn't they porpoise?	mustn't I be porpoising? mustn't you be porpoising? mustn't he be porpoising? mustn't we be porpoising? mustn't you be porpoising? mustn't they be porpoising?
Perfect	V-ing perfect
mustn't I have porpoised? mustn't you have porpoised? mustn't he have porpoised? mustn't we have porpoised? mustn't you have porpoised? mustn't they have porpoised?	mustn't I have been porpoising? mustn't you have been porpoising? mustn't he have been porpoising? mustn't we have been porpoising? mustn't you have been porpoising? mustn't they have been porpoising?