I should erase you should erase he should erase we should erase you should erase they should erase
V-ing form
I should be erasing you should be erasing he should be erasing we should be erasing you should be erasing they should be erasing
Perfect
I should have erased you should have erased he should have erased we should have erased you should have erased they should have erased
V-ing perfect
I should have been erasing you should have been erasing he should have been erasing we should have been erasing you should have been erasing they should have been erasing
Negation
Simple form
I should not erase you should not erase he should not erase we should not erase you should not erase they should not erase
V-ing form
I should not be erasing you should not be erasing he should not be erasing we should not be erasing you should not be erasing they should not be erasing
Perfect
I should not have erased you should not have erased he should not have erased we should not have erased you should not have erased they should not have erased
V-ing perfect
I should not have been erasing you should not have been erasing he should not have been erasing we should not have been erasing you should not have been erasing they should not have been erasing
Interrogative form
Simple form
should I erase? should you erase? should he erase? should we erase? should you erase? should they erase?
V-ing form
should I be erasing? should you be erasing? should he be erasing? should we be erasing? should you be erasing? should they be erasing?
Perfect
should I have erased? should you have erased? should he have erased? should we have erased? should you have erased? should they have erased?
V-ing perfect
should I have been erasing? should you have been erasing? should he have been erasing? should we have been erasing? should you have been erasing? should they have been erasing?
Interro-negative form
Simple form
should I not erase? should you not erase? should he not erase? should we not erase? should you not erase? should they not erase?
V-ing form
should I not be erasing? should you not be erasing? should he not be erasing? should we not be erasing? should you not be erasing? should they not be erasing?
Perfect
should I not have erased? should you not have erased? should he not have erased? should we not have erased? should you not have erased? should they not have erased?
V-ing perfect
should I not have been erasing? should you not have been erasing? should he not have been erasing? should we not have been erasing? should you not have been erasing? should they not have been erasing?