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