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