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