I should haven you should haven he should haven we should haven you should haven they should haven
V-ing form
I should be havening you should be havening he should be havening we should be havening you should be havening they should be havening
Perfect
I should have havened you should have havened he should have havened we should have havened you should have havened they should have havened
V-ing perfect
I should have been havening you should have been havening he should have been havening we should have been havening you should have been havening they should have been havening
Negation
Simple form
I should not haven you should not haven he should not haven we should not haven you should not haven they should not haven
V-ing form
I should not be havening you should not be havening he should not be havening we should not be havening you should not be havening they should not be havening
Perfect
I should not have havened you should not have havened he should not have havened we should not have havened you should not have havened they should not have havened
V-ing perfect
I should not have been havening you should not have been havening he should not have been havening we should not have been havening you should not have been havening they should not have been havening
Interrogative form
Simple form
should I haven? should you haven? should he haven? should we haven? should you haven? should they haven?
V-ing form
should I be havening? should you be havening? should he be havening? should we be havening? should you be havening? should they be havening?
Perfect
should I have havened? should you have havened? should he have havened? should we have havened? should you have havened? should they have havened?
V-ing perfect
should I have been havening? should you have been havening? should he have been havening? should we have been havening? should you have been havening? should they have been havening?
Interro-negative form
Simple form
should I not haven? should you not haven? should he not haven? should we not haven? should you not haven? should they not haven?
V-ing form
should I not be havening? should you not be havening? should he not be havening? should we not be havening? should you not be havening? should they not be havening?
Perfect
should I not have havened? should you not have havened? should he not have havened? should we not have havened? should you not have havened? should they not have havened?
V-ing perfect
should I not have been havening? should you not have been havening? should he not have been havening? should we not have been havening? should you not have been havening? should they not have been havening?