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 must not poo
you must not poo
he must not poo
we must not poo
you must not poo
they must not poo 	I must not be pooing
you must not be pooing
he must not be pooing
we must not be pooing
you must not be pooing
they must not be pooing	I must not have pooed
you must not have pooed
he must not have pooed
we must not have pooed
you must not have pooed
they must not have pooed	I must not have been pooing
you must not have been pooing
he must not have been pooing
we must not have been pooing
you must not have been pooing
they must not 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 	
must I not poo?
must you not poo?
must he not poo?
must we not poo?
must you not poo?
must they not poo? 	must I not be pooing?
must you not be pooing?
must he not be pooing?
must we not be pooing?
must you not be pooing?
must they not be pooing? 	must I not have pooed?
must you not have pooed?
must he not have pooed?
must we not have pooed?
must you not have pooed?
must they not have pooed? 	must I not have been pooing?
must you not have been pooing?
must he not have been pooing?
must we not have been pooing?
must you not have been pooing?
must they not have been pooing?