I should plug you should plug he should plug we should plug you should plug they should plug
V-ing form
I should be plugging you should be plugging he should be plugging we should be plugging you should be plugging they should be plugging
Perfect
I should have plugged you should have plugged he should have plugged we should have plugged you should have plugged they should have plugged
V-ing perfect
I should have been plugging you should have been plugging he should have been plugging we should have been plugging you should have been plugging they should have been plugging
Negation
Simple form
I should not plug you should not plug he should not plug we should not plug you should not plug they should not plug
V-ing form
I should not be plugging you should not be plugging he should not be plugging we should not be plugging you should not be plugging they should not be plugging
Perfect
I should not have plugged you should not have plugged he should not have plugged we should not have plugged you should not have plugged they should not have plugged
V-ing perfect
I should not have been plugging you should not have been plugging he should not have been plugging we should not have been plugging you should not have been plugging they should not 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
should I not plug? should you not plug? should he not plug? should we not plug? should you not plug? should they not plug?
V-ing form
should I not be plugging? should you not be plugging? should he not be plugging? should we not be plugging? should you not be plugging? should they not be plugging?
Perfect
should I not have plugged? should you not have plugged? should he not have plugged? should we not have plugged? should you not have plugged? should they not have plugged?
V-ing perfect
should I not have been plugging? should you not have been plugging? should he not have been plugging? should we not have been plugging? should you not have been plugging? should they not have been plugging?