I'd be filtrating you'd be filtrating he'd be filtrating we'd be filtrating you'd be filtrating they'd be filtrating
Perfect
I should've filtrated you should've filtrated he should've filtrated we should've filtrated you should've filtrated they should've filtrated
V-ing perfect
I should've been filtrating you should've been filtrating he should've been filtrating we should've been filtrating you should've been filtrating they should've been filtrating
Negation
Simple form
I shouldn't filtrate you shouldn't filtrate he shouldn't filtrate we shouldn't filtrate you shouldn't filtrate they shouldn't filtrate
V-ing form
I shouldn't be filtrating you shouldn't be filtrating he shouldn't be filtrating we shouldn't be filtrating you shouldn't be filtrating they shouldn't be filtrating
Perfect
I shouldn't have filtrated you shouldn't have filtrated he shouldn't have filtrated we shouldn't have filtrated you shouldn't have filtrated they shouldn't have filtrated
V-ing perfect
I shouldn't have been filtrating you shouldn't have been filtrating he shouldn't have been filtrating we shouldn't have been filtrating you shouldn't have been filtrating they shouldn't have been filtrating
Interrogative form
Simple form
should I filtrate? should you filtrate? should he filtrate? should we filtrate? should you filtrate? should they filtrate?
V-ing form
should I be filtrating? should you be filtrating? should he be filtrating? should we be filtrating? should you be filtrating? should they be filtrating?
Perfect
should I have filtrated? should you have filtrated? should he have filtrated? should we have filtrated? should you have filtrated? should they have filtrated?
V-ing perfect
should I have been filtrating? should you have been filtrating? should he have been filtrating? should we have been filtrating? should you have been filtrating? should they have been filtrating?
Interro-negative form
Simple form
shouldn't I filtrate? shouldn't you filtrate? shouldn't he filtrate? shouldn't we filtrate? shouldn't you filtrate? shouldn't they filtrate?
V-ing form
shouldn't I be filtrating? shouldn't you be filtrating? shouldn't he be filtrating? shouldn't we be filtrating? shouldn't you be filtrating? shouldn't they be filtrating?
Perfect
shouldn't I have filtrated? shouldn't you have filtrated? shouldn't he have filtrated? shouldn't we have filtrated? shouldn't you have filtrated? shouldn't they have filtrated?
V-ing perfect
shouldn't I have been filtrating? shouldn't you have been filtrating? shouldn't he have been filtrating? shouldn't we have been filtrating? shouldn't you have been filtrating? shouldn't they have been filtrating?