must fringe
Regular verb: fringe - fringed- fringed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must fringe
you must fringe
he must fringe
we must fringe
you must fringe
they must fringe 	I must be fringing
you must be fringing
he must be fringing
we must be fringing
you must be fringing
they must be fringing	I must have fringed
you must have fringed
he must have fringed
we must have fringed
you must have fringed
they must have fringed	I must have been fringing
you must have been fringing
he must have been fringing
we must have been fringing
you must have been fringing
they must have been fringing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't fringe
you mustn't fringe
he mustn't fringe
we mustn't fringe
you mustn't fringe
they mustn't fringe 	I mustn't be fringing
you mustn't be fringing
he mustn't be fringing
we mustn't be fringing
you mustn't be fringing
they mustn't be fringing	I mustn't have fringed
you mustn't have fringed
he mustn't have fringed
we mustn't have fringed
you mustn't have fringed
they mustn't have fringed	I mustn't have been fringing
you mustn't have been fringing
he mustn't have been fringing
we mustn't have been fringing
you mustn't have been fringing
they mustn't have been fringing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I fringe?
must you fringe?
must he fringe?
must we fringe?
must you fringe?
must they fringe? 	must I be fringing?
must you be fringing?
must he be fringing?
must we be fringing?
must you be fringing?
must they be fringing? 	must I have fringed?
must you have fringed?
must he have fringed?
must we have fringed?
must you have fringed?
must they have fringed? 	must I have been fringing?
must you have been fringing?
must he have been fringing?
must we have been fringing?
must you have been fringing?
must they have been fringing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I fringe?
mustn't you fringe?
mustn't he fringe?
mustn't we fringe?
mustn't you fringe?
mustn't they fringe? 	mustn't I be fringing?
mustn't you be fringing?
mustn't he be fringing?
mustn't we be fringing?
mustn't you be fringing?
mustn't they be fringing? 	mustn't I have fringed?
mustn't you have fringed?
mustn't he have fringed?
mustn't we have fringed?
mustn't you have fringed?
mustn't they have fringed? 	mustn't I have been fringing?
mustn't you have been fringing?
mustn't he have been fringing?
mustn't we have been fringing?
mustn't you have been fringing?
mustn't they have been fringing?