I should sack you should sack he should sack we should sack you should sack they should sack
V-ing form
I should be sacking you should be sacking he should be sacking we should be sacking you should be sacking they should be sacking
Perfect
I should have sacked you should have sacked he should have sacked we should have sacked you should have sacked they should have sacked
V-ing perfect
I should have been sacking you should have been sacking he should have been sacking we should have been sacking you should have been sacking they should have been sacking
Negation
Simple form
I should not sack you should not sack he should not sack we should not sack you should not sack they should not sack
V-ing form
I should not be sacking you should not be sacking he should not be sacking we should not be sacking you should not be sacking they should not be sacking
Perfect
I should not have sacked you should not have sacked he should not have sacked we should not have sacked you should not have sacked they should not have sacked
V-ing perfect
I should not have been sacking you should not have been sacking he should not have been sacking we should not have been sacking you should not have been sacking they should not have been sacking
Interrogative form
Simple form
should I sack? should you sack? should he sack? should we sack? should you sack? should they sack?
V-ing form
should I be sacking? should you be sacking? should he be sacking? should we be sacking? should you be sacking? should they be sacking?
Perfect
should I have sacked? should you have sacked? should he have sacked? should we have sacked? should you have sacked? should they have sacked?
V-ing perfect
should I have been sacking? should you have been sacking? should he have been sacking? should we have been sacking? should you have been sacking? should they have been sacking?
Interro-negative form
Simple form
should I not sack? should you not sack? should he not sack? should we not sack? should you not sack? should they not sack?
V-ing form
should I not be sacking? should you not be sacking? should he not be sacking? should we not be sacking? should you not be sacking? should they not be sacking?
Perfect
should I not have sacked? should you not have sacked? should he not have sacked? should we not have sacked? should you not have sacked? should they not have sacked?
V-ing perfect
should I not have been sacking? should you not have been sacking? should he not have been sacking? should we not have been sacking? should you not have been sacking? should they not have been sacking?