must frit
Verbo regular: frit - frited- frited

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must frit
you must frit
she must frit
we must frit
you must frit
they must frit 	I must be friting
you must be friting
she must be friting
we must be friting
you must be friting
they must be friting	I must have frited
you must have frited
she must have frited
we must have frited
you must have frited
they must have frited	I must have been friting
you must have been friting
she must have been friting
we must have been friting
you must have been friting
they must have been friting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not frit
you must not frit
she must not frit
we must not frit
you must not frit
they must not frit 	I must not be friting
you must not be friting
she must not be friting
we must not be friting
you must not be friting
they must not be friting	I must not have frited
you must not have frited
she must not have frited
we must not have frited
you must not have frited
they must not have frited	I must not have been friting
you must not have been friting
she must not have been friting
we must not have been friting
you must not have been friting
they must not have been friting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I frit?
must you frit?
must she frit?
must we frit?
must you frit?
must they frit? 	must I be friting?
must you be friting?
must she be friting?
must we be friting?
must you be friting?
must they be friting? 	must I have frited?
must you have frited?
must she have frited?
must we have frited?
must you have frited?
must they have frited? 	must I have been friting?
must you have been friting?
must she have been friting?
must we have been friting?
must you have been friting?
must they have been friting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not frit?
must you not frit?
must she not frit?
must we not frit?
must you not frit?
must they not frit? 	must I not be friting?
must you not be friting?
must she not be friting?
must we not be friting?
must you not be friting?
must they not be friting? 	must I not have frited?
must you not have frited?
must she not have frited?
must we not have frited?
must you not have frited?
must they not have frited? 	must I not have been friting?
must you not have been friting?
must she not have been friting?
must we not have been friting?
must you not have been friting?
must they not have been friting?