I could filtrate you could filtrate he could filtrate we could filtrate you could filtrate they could filtrate
Forme en V-ing
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
I could have filtrated you could have filtrated he could have filtrated we could have filtrated you could have filtrated they could have filtrated
Perfect en V-ing
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
Négation
Forme simple
I could not filtrate you could not filtrate he could not filtrate we could not filtrate you could not filtrate they could not filtrate
Forme en V-ing
I could not be filtrating you could not be filtrating he could not be filtrating we could not be filtrating you could not be filtrating they could not be filtrating
Perfect
I could not have filtrated you could not have filtrated he could not have filtrated we could not have filtrated you could not have filtrated they could not have filtrated
Perfect en V-ing
I could not have been filtrating you could not have been filtrating he could not have been filtrating we could not have been filtrating you could not have been filtrating they could not have been filtrating
Forme interrogative
Forme simple
could I filtrate? could you filtrate? could he filtrate? could we filtrate? could you filtrate? could they filtrate?
Forme en V-ing
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
could I have filtrated? could you have filtrated? could he have filtrated? could we have filtrated? could you have filtrated? could they have filtrated?
Perfect en V-ing
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?
Forme interro-négative
Forme simple
could I not filtrate? could you not filtrate? could he not filtrate? could we not filtrate? could you not filtrate? could they not filtrate?
Forme en V-ing
could I not be filtrating? could you not be filtrating? could he not be filtrating? could we not be filtrating? could you not be filtrating? could they not be filtrating?
Perfect
could I not have filtrated? could you not have filtrated? could he not have filtrated? could we not have filtrated? could you not have filtrated? could they not have filtrated?
Perfect en V-ing
could I not have been filtrating? could you not have been filtrating? could he not have been filtrating? could we not have been filtrating? could you not have been filtrating? could they not have been filtrating?