must purfle
Regular verb: purfle - purfled- purfled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must purfle
you must purfle
he must purfle
we must purfle
you must purfle
they must purfle 	I must be purfling
you must be purfling
he must be purfling
we must be purfling
you must be purfling
they must be purfling	I must have purfled
you must have purfled
he must have purfled
we must have purfled
you must have purfled
they must have purfled	I must have been purfling
you must have been purfling
he must have been purfling
we must have been purfling
you must have been purfling
they must have been purfling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't purfle
you mustn't purfle
he mustn't purfle
we mustn't purfle
you mustn't purfle
they mustn't purfle 	I mustn't be purfling
you mustn't be purfling
he mustn't be purfling
we mustn't be purfling
you mustn't be purfling
they mustn't be purfling	I mustn't have purfled
you mustn't have purfled
he mustn't have purfled
we mustn't have purfled
you mustn't have purfled
they mustn't have purfled	I mustn't have been purfling
you mustn't have been purfling
he mustn't have been purfling
we mustn't have been purfling
you mustn't have been purfling
they mustn't have been purfling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I purfle?
must you purfle?
must he purfle?
must we purfle?
must you purfle?
must they purfle? 	must I be purfling?
must you be purfling?
must he be purfling?
must we be purfling?
must you be purfling?
must they be purfling? 	must I have purfled?
must you have purfled?
must he have purfled?
must we have purfled?
must you have purfled?
must they have purfled? 	must I have been purfling?
must you have been purfling?
must he have been purfling?
must we have been purfling?
must you have been purfling?
must they have been purfling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I purfle?
mustn't you purfle?
mustn't he purfle?
mustn't we purfle?
mustn't you purfle?
mustn't they purfle? 	mustn't I be purfling?
mustn't you be purfling?
mustn't he be purfling?
mustn't we be purfling?
mustn't you be purfling?
mustn't they be purfling? 	mustn't I have purfled?
mustn't you have purfled?
mustn't he have purfled?
mustn't we have purfled?
mustn't you have purfled?
mustn't they have purfled? 	mustn't I have been purfling?
mustn't you have been purfling?
mustn't he have been purfling?
mustn't we have been purfling?
mustn't you have been purfling?
mustn't they have been purfling?