English verb conjugation
MUST POO

Regular verb: poo - pooed - pooed

Affirmation

Simple form	V-ing form
I must poo you must poo she must poo we must poo you must poo they must poo	I must be pooing you must be pooing she must be pooing we must be pooing you must be pooing they must be pooing
Perfect	V-ing perfect
I must have pooed you must have pooed she must have pooed we must have pooed you must have pooed they must have pooed	I must have been pooing you must have been pooing she must have been pooing we must have been pooing you must have been pooing they must have been pooing

Negation

Simple form	V-ing form
I mustn't poo you mustn't poo she mustn't poo we mustn't poo you mustn't poo they mustn't poo	I mustn't be pooing you mustn't be pooing she mustn't be pooing we mustn't be pooing you mustn't be pooing they mustn't be pooing
Perfect	V-ing perfect
I mustn't have pooed you mustn't have pooed she mustn't have pooed we mustn't have pooed you mustn't have pooed they mustn't have pooed	I mustn't have been pooing you mustn't have been pooing she mustn't have been pooing we mustn't have been pooing you mustn't have been pooing they mustn't have been pooing

Interrogative form

Simple form	V-ing form
must I poo? must you poo? must she poo? must we poo? must you poo? must they poo?	must I be pooing? must you be pooing? must she be pooing? must we be pooing? must you be pooing? must they be pooing?
Perfect	V-ing perfect
must I have pooed? must you have pooed? must she have pooed? must we have pooed? must you have pooed? must they have pooed?	must I have been pooing? must you have been pooing? must she have been pooing? must we have been pooing? must you have been pooing? must they have been pooing?

Interro-negative form

Simple form	V-ing form
mustn't I poo? mustn't you poo? mustn't she poo? mustn't we poo? mustn't you poo? mustn't they poo?	mustn't I be pooing? mustn't you be pooing? mustn't she be pooing? mustn't we be pooing? mustn't you be pooing? mustn't they be pooing?
Perfect	V-ing perfect
mustn't I have pooed? mustn't you have pooed? mustn't she have pooed? mustn't we have pooed? mustn't you have pooed? mustn't they have pooed?	mustn't I have been pooing? mustn't you have been pooing? mustn't she have been pooing? mustn't we have been pooing? mustn't you have been pooing? mustn't they have been pooing?