must perk perk
Regular verb: perk perk - perk perked- perk perked

, this verb may not exist. Conjugation is given as example.

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must perk perk
you must perk perk
she must perk perk
we must perk perk
you must perk perk
they must perk perk 	I must be perk perking
you must be perk perking
she must be perk perking
we must be perk perking
you must be perk perking
they must be perk perking	I must have perk perked
you must have perk perked
she must have perk perked
we must have perk perked
you must have perk perked
they must have perk perked	I must have been perk perking
you must have been perk perking
she must have been perk perking
we must have been perk perking
you must have been perk perking
they must have been perk perking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't perk perk
you mustn't perk perk
she mustn't perk perk
we mustn't perk perk
you mustn't perk perk
they mustn't perk perk 	I mustn't be perk perking
you mustn't be perk perking
she mustn't be perk perking
we mustn't be perk perking
you mustn't be perk perking
they mustn't be perk perking	I mustn't have perk perked
you mustn't have perk perked
she mustn't have perk perked
we mustn't have perk perked
you mustn't have perk perked
they mustn't have perk perked	I mustn't have been perk perking
you mustn't have been perk perking
she mustn't have been perk perking
we mustn't have been perk perking
you mustn't have been perk perking
they mustn't have been perk perking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I perk perk?
must you perk perk?
must she perk perk?
must we perk perk?
must you perk perk?
must they perk perk? 	must I be perk perking?
must you be perk perking?
must she be perk perking?
must we be perk perking?
must you be perk perking?
must they be perk perking? 	must I have perk perked?
must you have perk perked?
must she have perk perked?
must we have perk perked?
must you have perk perked?
must they have perk perked? 	must I have been perk perking?
must you have been perk perking?
must she have been perk perking?
must we have been perk perking?
must you have been perk perking?
must they have been perk perking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I perk perk?
mustn't you perk perk?
mustn't she perk perk?
mustn't we perk perk?
mustn't you perk perk?
mustn't they perk perk? 	mustn't I be perk perking?
mustn't you be perk perking?
mustn't she be perk perking?
mustn't we be perk perking?
mustn't you be perk perking?
mustn't they be perk perking? 	mustn't I have perk perked?
mustn't you have perk perked?
mustn't she have perk perked?
mustn't we have perk perked?
mustn't you have perk perked?
mustn't they have perk perked? 	mustn't I have been perk perking?
mustn't you have been perk perking?
mustn't she have been perk perking?
mustn't we have been perk perking?
mustn't you have been perk perking?
mustn't they have been perk perking?