must poo
Regular verb: poo - pooed- pooed

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