English verb conjugation
MUST PORPOISE

Regular verb: porpoise - porpoised - porpoised

Affirmation

Simple form	V-ing form
I must porpoise you must porpoise she must porpoise we must porpoise you must porpoise they must porpoise	I must be porpoising you must be porpoising she 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 she 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 she 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 she 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 she 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 she 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 she 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 she porpoise? must we porpoise? must you porpoise? must they porpoise?	must I be porpoising? must you be porpoising? must she 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 she 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 she 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 she 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 she 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 she 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 she have been porpoising? mustn't we have been porpoising? mustn't you have been porpoising? mustn't they have been porpoising?