I should push you should push he should push we should push you should push they should push
V-ing form
I should be pushing you should be pushing he should be pushing we should be pushing you should be pushing they should be pushing
Perfect
I should have pushed you should have pushed he should have pushed we should have pushed you should have pushed they should have pushed
V-ing perfect
I should have been pushing you should have been pushing he should have been pushing we should have been pushing you should have been pushing they should have been pushing
Negation
Simple form
I should not push you should not push he should not push we should not push you should not push they should not push
V-ing form
I should not be pushing you should not be pushing he should not be pushing we should not be pushing you should not be pushing they should not be pushing
Perfect
I should not have pushed you should not have pushed he should not have pushed we should not have pushed you should not have pushed they should not have pushed
V-ing perfect
I should not have been pushing you should not have been pushing he should not have been pushing we should not have been pushing you should not have been pushing they should not have been pushing
Interrogative form
Simple form
should I push? should you push? should he push? should we push? should you push? should they push?
V-ing form
should I be pushing? should you be pushing? should he be pushing? should we be pushing? should you be pushing? should they be pushing?
Perfect
should I have pushed? should you have pushed? should he have pushed? should we have pushed? should you have pushed? should they have pushed?
V-ing perfect
should I have been pushing? should you have been pushing? should he have been pushing? should we have been pushing? should you have been pushing? should they have been pushing?
Interro-negative form
Simple form
should I not push? should you not push? should he not push? should we not push? should you not push? should they not push?
V-ing form
should I not be pushing? should you not be pushing? should he not be pushing? should we not be pushing? should you not be pushing? should they not be pushing?
Perfect
should I not have pushed? should you not have pushed? should he not have pushed? should we not have pushed? should you not have pushed? should they not have pushed?
V-ing perfect
should I not have been pushing? should you not have been pushing? should he not have been pushing? should we not have been pushing? should you not have been pushing? should they not have been pushing?