must flaw
Regular verb: flaw - flawed- flawed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must flaw
you must flaw
he must flaw
we must flaw
you must flaw
they must flaw 	I must be flawing
you must be flawing
he must be flawing
we must be flawing
you must be flawing
they must be flawing	I must have flawed
you must have flawed
he must have flawed
we must have flawed
you must have flawed
they must have flawed	I must have been flawing
you must have been flawing
he must have been flawing
we must have been flawing
you must have been flawing
they must have been flawing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't flaw
you mustn't flaw
he mustn't flaw
we mustn't flaw
you mustn't flaw
they mustn't flaw 	I mustn't be flawing
you mustn't be flawing
he mustn't be flawing
we mustn't be flawing
you mustn't be flawing
they mustn't be flawing	I mustn't have flawed
you mustn't have flawed
he mustn't have flawed
we mustn't have flawed
you mustn't have flawed
they mustn't have flawed	I mustn't have been flawing
you mustn't have been flawing
he mustn't have been flawing
we mustn't have been flawing
you mustn't have been flawing
they mustn't have been flawing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I flaw?
must you flaw?
must he flaw?
must we flaw?
must you flaw?
must they flaw? 	must I be flawing?
must you be flawing?
must he be flawing?
must we be flawing?
must you be flawing?
must they be flawing? 	must I have flawed?
must you have flawed?
must he have flawed?
must we have flawed?
must you have flawed?
must they have flawed? 	must I have been flawing?
must you have been flawing?
must he have been flawing?
must we have been flawing?
must you have been flawing?
must they have been flawing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I flaw?
mustn't you flaw?
mustn't he flaw?
mustn't we flaw?
mustn't you flaw?
mustn't they flaw? 	mustn't I be flawing?
mustn't you be flawing?
mustn't he be flawing?
mustn't we be flawing?
mustn't you be flawing?
mustn't they be flawing? 	mustn't I have flawed?
mustn't you have flawed?
mustn't he have flawed?
mustn't we have flawed?
mustn't you have flawed?
mustn't they have flawed? 	mustn't I have been flawing?
mustn't you have been flawing?
mustn't he have been flawing?
mustn't we have been flawing?
mustn't you have been flawing?
mustn't they have been flawing?