must filtrate
Regular verb: filtrate - filtrated- filtrated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't filtrate
you mustn't filtrate
he mustn't filtrate
we mustn't filtrate
you mustn't filtrate
they mustn't filtrate 	I mustn't be filtrating
you mustn't be filtrating
he mustn't be filtrating
we mustn't be filtrating
you mustn't be filtrating
they mustn't be filtrating	I mustn't have filtrated
you mustn't have filtrated
he mustn't have filtrated
we mustn't have filtrated
you mustn't have filtrated
they mustn't have filtrated	I mustn't have been filtrating
you mustn't have been filtrating
he mustn't have been filtrating
we mustn't have been filtrating
you mustn't have been filtrating
they mustn't have been filtrating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I filtrate?
mustn't you filtrate?
mustn't he filtrate?
mustn't we filtrate?
mustn't you filtrate?
mustn't they filtrate? 	mustn't I be filtrating?
mustn't you be filtrating?
mustn't he be filtrating?
mustn't we be filtrating?
mustn't you be filtrating?
mustn't they be filtrating? 	mustn't I have filtrated?
mustn't you have filtrated?
mustn't he have filtrated?
mustn't we have filtrated?
mustn't you have filtrated?
mustn't they have filtrated? 	mustn't I have been filtrating?
mustn't you have been filtrating?
mustn't he have been filtrating?
mustn't we have been filtrating?
mustn't you have been filtrating?
mustn't they have been filtrating?