I should lead you should lead he should lead we should lead you should lead they should lead
V-ing form
I should be leading you should be leading he should be leading we should be leading you should be leading they should be leading
Perfect
I should have led you should have led he should have led we should have led you should have led they should have led
V-ing perfect
I should have been leading you should have been leading he should have been leading we should have been leading you should have been leading they should have been leading
Negation
Simple form
I should not lead you should not lead he should not lead we should not lead you should not lead they should not lead
V-ing form
I should not be leading you should not be leading he should not be leading we should not be leading you should not be leading they should not be leading
Perfect
I should not have led you should not have led he should not have led we should not have led you should not have led they should not have led
V-ing perfect
I should not have been leading you should not have been leading he should not have been leading we should not have been leading you should not have been leading they should not have been leading
Interrogative form
Simple form
should I lead? should you lead? should he lead? should we lead? should you lead? should they lead?
V-ing form
should I be leading? should you be leading? should he be leading? should we be leading? should you be leading? should they be leading?
Perfect
should I have led? should you have led? should he have led? should we have led? should you have led? should they have led?
V-ing perfect
should I have been leading? should you have been leading? should he have been leading? should we have been leading? should you have been leading? should they have been leading?
Interro-negative form
Simple form
should I not lead? should you not lead? should he not lead? should we not lead? should you not lead? should they not lead?
V-ing form
should I not be leading? should you not be leading? should he not be leading? should we not be leading? should you not be leading? should they not be leading?
Perfect
should I not have led? should you not have led? should he not have led? should we not have led? should you not have led? should they not have led?
V-ing perfect
should I not have been leading? should you not have been leading? should he not have been leading? should we not have been leading? should you not have been leading? should they not have been leading?