I should first-foot you should first-foot he should first-foot we should first-foot you should first-foot they should first-foot
V-ing form
I should be first-footing you should be first-footing he should be first-footing we should be first-footing you should be first-footing they should be first-footing
Perfect
I should have first-footed you should have first-footed he should have first-footed we should have first-footed you should have first-footed they should have first-footed
V-ing perfect
I should have been first-footing you should have been first-footing he should have been first-footing we should have been first-footing you should have been first-footing they should have been first-footing
Negation
Simple form
I should not first-foot you should not first-foot he should not first-foot we should not first-foot you should not first-foot they should not first-foot
V-ing form
I should not be first-footing you should not be first-footing he should not be first-footing we should not be first-footing you should not be first-footing they should not be first-footing
Perfect
I should not have first-footed you should not have first-footed he should not have first-footed we should not have first-footed you should not have first-footed they should not have first-footed
V-ing perfect
I should not have been first-footing you should not have been first-footing he should not have been first-footing we should not have been first-footing you should not have been first-footing they should not have been first-footing
Interrogative form
Simple form
should I first-foot? should you first-foot? should he first-foot? should we first-foot? should you first-foot? should they first-foot?
V-ing form
should I be first-footing? should you be first-footing? should he be first-footing? should we be first-footing? should you be first-footing? should they be first-footing?
Perfect
should I have first-footed? should you have first-footed? should he have first-footed? should we have first-footed? should you have first-footed? should they have first-footed?
V-ing perfect
should I have been first-footing? should you have been first-footing? should he have been first-footing? should we have been first-footing? should you have been first-footing? should they have been first-footing?
Interro-negative form
Simple form
should I not first-foot? should you not first-foot? should he not first-foot? should we not first-foot? should you not first-foot? should they not first-foot?
V-ing form
should I not be first-footing? should you not be first-footing? should he not be first-footing? should we not be first-footing? should you not be first-footing? should they not be first-footing?
Perfect
should I not have first-footed? should you not have first-footed? should he not have first-footed? should we not have first-footed? should you not have first-footed? should they not have first-footed?
V-ing perfect
should I not have been first-footing? should you not have been first-footing? should he not have been first-footing? should we not have been first-footing? should you not have been first-footing? should they not have been first-footing?