must fright
Regular verb: fright - frighted- frighted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must fright
you must fright
she must fright
we must fright
you must fright
they must fright 	I must be frighting
you must be frighting
she must be frighting
we must be frighting
you must be frighting
they must be frighting	I must have frighted
you must have frighted
she must have frighted
we must have frighted
you must have frighted
they must have frighted	I must have been frighting
you must have been frighting
she must have been frighting
we must have been frighting
you must have been frighting
they must have been frighting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't fright
you mustn't fright
she mustn't fright
we mustn't fright
you mustn't fright
they mustn't fright 	I mustn't be frighting
you mustn't be frighting
she mustn't be frighting
we mustn't be frighting
you mustn't be frighting
they mustn't be frighting	I mustn't have frighted
you mustn't have frighted
she mustn't have frighted
we mustn't have frighted
you mustn't have frighted
they mustn't have frighted	I mustn't have been frighting
you mustn't have been frighting
she mustn't have been frighting
we mustn't have been frighting
you mustn't have been frighting
they mustn't have been frighting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I fright?
must you fright?
must she fright?
must we fright?
must you fright?
must they fright? 	must I be frighting?
must you be frighting?
must she be frighting?
must we be frighting?
must you be frighting?
must they be frighting? 	must I have frighted?
must you have frighted?
must she have frighted?
must we have frighted?
must you have frighted?
must they have frighted? 	must I have been frighting?
must you have been frighting?
must she have been frighting?
must we have been frighting?
must you have been frighting?
must they have been frighting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I fright?
mustn't you fright?
mustn't she fright?
mustn't we fright?
mustn't you fright?
mustn't they fright? 	mustn't I be frighting?
mustn't you be frighting?
mustn't she be frighting?
mustn't we be frighting?
mustn't you be frighting?
mustn't they be frighting? 	mustn't I have frighted?
mustn't you have frighted?
mustn't she have frighted?
mustn't we have frighted?
mustn't you have frighted?
mustn't they have frighted? 	mustn't I have been frighting?
mustn't you have been frighting?
mustn't she have been frighting?
mustn't we have been frighting?
mustn't you have been frighting?
mustn't they have been frighting?