must fray
Regular verb: fray - frayed- frayed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must fray
you must fray
she must fray
we must fray
you must fray
they must fray 	I must be fraying
you must be fraying
she must be fraying
we must be fraying
you must be fraying
they must be fraying	I must have frayed
you must have frayed
she must have frayed
we must have frayed
you must have frayed
they must have frayed	I must have been fraying
you must have been fraying
she must have been fraying
we must have been fraying
you must have been fraying
they must have been fraying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not fray
you must not fray
she must not fray
we must not fray
you must not fray
they must not fray 	I must not be fraying
you must not be fraying
she must not be fraying
we must not be fraying
you must not be fraying
they must not be fraying	I must not have frayed
you must not have frayed
she must not have frayed
we must not have frayed
you must not have frayed
they must not have frayed	I must not have been fraying
you must not have been fraying
she must not have been fraying
we must not have been fraying
you must not have been fraying
they must not have been fraying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I fray?
must you fray?
must she fray?
must we fray?
must you fray?
must they fray? 	must I be fraying?
must you be fraying?
must she be fraying?
must we be fraying?
must you be fraying?
must they be fraying? 	must I have frayed?
must you have frayed?
must she have frayed?
must we have frayed?
must you have frayed?
must they have frayed? 	must I have been fraying?
must you have been fraying?
must she have been fraying?
must we have been fraying?
must you have been fraying?
must they have been fraying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not fray?
must you not fray?
must she not fray?
must we not fray?
must you not fray?
must they not fray? 	must I not be fraying?
must you not be fraying?
must she not be fraying?
must we not be fraying?
must you not be fraying?
must they not be fraying? 	must I not have frayed?
must you not have frayed?
must she not have frayed?
must we not have frayed?
must you not have frayed?
must they not have frayed? 	must I not have been fraying?
must you not have been fraying?
must she not have been fraying?
must we not have been fraying?
must you not have been fraying?
must they not have been fraying?