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