I'd be treating you'd be treating she'd be treating we'd be treating you'd be treating they'd be treating
Perfect
I should've treated you should've treated she should've treated we should've treated you should've treated they should've treated
V-ing perfect
I should've been treating you should've been treating she should've been treating we should've been treating you should've been treating they should've been treating
Negation
Simple form
I shouldn't treat you shouldn't treat she shouldn't treat we shouldn't treat you shouldn't treat they shouldn't treat
V-ing form
I shouldn't be treating you shouldn't be treating she shouldn't be treating we shouldn't be treating you shouldn't be treating they shouldn't be treating
Perfect
I shouldn't have treated you shouldn't have treated she shouldn't have treated we shouldn't have treated you shouldn't have treated they shouldn't have treated
V-ing perfect
I shouldn't have been treating you shouldn't have been treating she shouldn't have been treating we shouldn't have been treating you shouldn't have been treating they shouldn't have been treating
Interrogative form
Simple form
should I treat? should you treat? should she treat? should we treat? should you treat? should they treat?
V-ing form
should I be treating? should you be treating? should she be treating? should we be treating? should you be treating? should they be treating?
Perfect
should I have treated? should you have treated? should she have treated? should we have treated? should you have treated? should they have treated?
V-ing perfect
should I have been treating? should you have been treating? should she have been treating? should we have been treating? should you have been treating? should they have been treating?
Interro-negative form
Simple form
shouldn't I treat? shouldn't you treat? shouldn't she treat? shouldn't we treat? shouldn't you treat? shouldn't they treat?
V-ing form
shouldn't I be treating? shouldn't you be treating? shouldn't she be treating? shouldn't we be treating? shouldn't you be treating? shouldn't they be treating?
Perfect
shouldn't I have treated? shouldn't you have treated? shouldn't she have treated? shouldn't we have treated? shouldn't you have treated? shouldn't they have treated?
V-ing perfect
shouldn't I have been treating? shouldn't you have been treating? shouldn't she have been treating? shouldn't we have been treating? shouldn't you have been treating? shouldn't they have been treating?