English verb conjugation
COULD FILTRATE

Regular verb: filtrate - filtrated - filtrated

Affirmation

Simple form	V-ing form
I could filtrate you could filtrate he could filtrate we could filtrate you could filtrate they could filtrate	I could be filtrating you could be filtrating he could be filtrating we could be filtrating you could be filtrating they could be filtrating
Perfect	V-ing perfect
I could have filtrated you could have filtrated he could have filtrated we could have filtrated you could have filtrated they could have filtrated	I could have been filtrating you could have been filtrating he could have been filtrating we could have been filtrating you could have been filtrating they could have been filtrating

Negation

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

Interrogative form

Simple form	V-ing form
could I filtrate? could you filtrate? could he filtrate? could we filtrate? could you filtrate? could they filtrate?	could I be filtrating? could you be filtrating? could he be filtrating? could we be filtrating? could you be filtrating? could they be filtrating?
Perfect	V-ing perfect
could I have filtrated? could you have filtrated? could he have filtrated? could we have filtrated? could you have filtrated? could they have filtrated?	could I have been filtrating? could you have been filtrating? could he have been filtrating? could we have been filtrating? could you have been filtrating? could they have been filtrating?

Interro-negative form

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