must filtrate
Verbo regular: filtrate - filtrated- filtrated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must filtrate
you must filtrate
he must filtrate
we must filtrate
you must filtrate
they must filtrate 	I must be filtrating
you must be filtrating
he must be filtrating
we must be filtrating
you must be filtrating
they must be filtrating	I must have filtrated
you must have filtrated
he must have filtrated
we must have filtrated
you must have filtrated
they must have filtrated	I must have been filtrating
you must have been filtrating
he must have been filtrating
we must have been filtrating
you must have been filtrating
they must have been filtrating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not filtrate
you must not filtrate
he must not filtrate
we must not filtrate
you must not filtrate
they must not filtrate 	I must not be filtrating
you must not be filtrating
he must not be filtrating
we must not be filtrating
you must not be filtrating
they must not be filtrating	I must not have filtrated
you must not have filtrated
he must not have filtrated
we must not have filtrated
you must not have filtrated
they must not have filtrated	I must not have been filtrating
you must not have been filtrating
he must not have been filtrating
we must not have been filtrating
you must not have been filtrating
they must not have been filtrating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I filtrate?
must you filtrate?
must he filtrate?
must we filtrate?
must you filtrate?
must they filtrate? 	must I be filtrating?
must you be filtrating?
must he be filtrating?
must we be filtrating?
must you be filtrating?
must they be filtrating? 	must I have filtrated?
must you have filtrated?
must he have filtrated?
must we have filtrated?
must you have filtrated?
must they have filtrated? 	must I have been filtrating?
must you have been filtrating?
must he have been filtrating?
must we have been filtrating?
must you have been filtrating?
must they have been filtrating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not filtrate?
must you not filtrate?
must he not filtrate?
must we not filtrate?
must you not filtrate?
must they not filtrate? 	must I not be filtrating?
must you not be filtrating?
must he not be filtrating?
must we not be filtrating?
must you not be filtrating?
must they not be filtrating? 	must I not have filtrated?
must you not have filtrated?
must he not have filtrated?
must we not have filtrated?
must you not have filtrated?
must they not have filtrated? 	must I not have been filtrating?
must you not have been filtrating?
must he not have been filtrating?
must we not have been filtrating?
must you not have been filtrating?
must they not have been filtrating?