must frisk
Verbo regular: frisk - frisked- frisked

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must frisk
you must frisk
he must frisk
we must frisk
you must frisk
they must frisk 	I must be frisking
you must be frisking
he must be frisking
we must be frisking
you must be frisking
they must be frisking	I must have frisked
you must have frisked
he must have frisked
we must have frisked
you must have frisked
they must have frisked	I must have been frisking
you must have been frisking
he must have been frisking
we must have been frisking
you must have been frisking
they must have been frisking	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not frisk
you must not frisk
he must not frisk
we must not frisk
you must not frisk
they must not frisk 	I must not be frisking
you must not be frisking
he must not be frisking
we must not be frisking
you must not be frisking
they must not be frisking	I must not have frisked
you must not have frisked
he must not have frisked
we must not have frisked
you must not have frisked
they must not have frisked	I must not have been frisking
you must not have been frisking
he must not have been frisking
we must not have been frisking
you must not have been frisking
they must not have been frisking	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I frisk?
must you frisk?
must he frisk?
must we frisk?
must you frisk?
must they frisk? 	must I be frisking?
must you be frisking?
must he be frisking?
must we be frisking?
must you be frisking?
must they be frisking? 	must I have frisked?
must you have frisked?
must he have frisked?
must we have frisked?
must you have frisked?
must they have frisked? 	must I have been frisking?
must you have been frisking?
must he have been frisking?
must we have been frisking?
must you have been frisking?
must they have been frisking? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not frisk?
must you not frisk?
must he not frisk?
must we not frisk?
must you not frisk?
must they not frisk? 	must I not be frisking?
must you not be frisking?
must he not be frisking?
must we not be frisking?
must you not be frisking?
must they not be frisking? 	must I not have frisked?
must you not have frisked?
must he not have frisked?
must we not have frisked?
must you not have frisked?
must they not have frisked? 	must I not have been frisking?
must you not have been frisking?
must he not have been frisking?
must we not have been frisking?
must you not have been frisking?
must they not have been frisking?