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