English verb conjugation
SHOULD POSTFIX

Regular verb: postfix - postfixed - postfixed

Affirmation

Simple form	V-ing form
I should postfix you should postfix he should postfix we should postfix you should postfix they should postfix	I should be postfixing you should be postfixing he should be postfixing we should be postfixing you should be postfixing they should be postfixing
Perfect	V-ing perfect
I should have postfixed you should have postfixed he should have postfixed we should have postfixed you should have postfixed they should have postfixed	I should have been postfixing you should have been postfixing he should have been postfixing we should have been postfixing you should have been postfixing they should have been postfixing

Negation

Simple form	V-ing form
I should not postfix you should not postfix he should not postfix we should not postfix you should not postfix they should not postfix	I should not be postfixing you should not be postfixing he should not be postfixing we should not be postfixing you should not be postfixing they should not be postfixing
Perfect	V-ing perfect
I should not have postfixed you should not have postfixed he should not have postfixed we should not have postfixed you should not have postfixed they should not have postfixed	I should not have been postfixing you should not have been postfixing he should not have been postfixing we should not have been postfixing you should not have been postfixing they should not have been postfixing

Interrogative form

Simple form	V-ing form
should I postfix? should you postfix? should he postfix? should we postfix? should you postfix? should they postfix?	should I be postfixing? should you be postfixing? should he be postfixing? should we be postfixing? should you be postfixing? should they be postfixing?
Perfect	V-ing perfect
should I have postfixed? should you have postfixed? should he have postfixed? should we have postfixed? should you have postfixed? should they have postfixed?	should I have been postfixing? should you have been postfixing? should he have been postfixing? should we have been postfixing? should you have been postfixing? should they have been postfixing?

Interro-negative form

Simple form	V-ing form
should I not postfix? should you not postfix? should he not postfix? should we not postfix? should you not postfix? should they not postfix?	should I not be postfixing? should you not be postfixing? should he not be postfixing? should we not be postfixing? should you not be postfixing? should they not be postfixing?
Perfect	V-ing perfect
should I not have postfixed? should you not have postfixed? should he not have postfixed? should we not have postfixed? should you not have postfixed? should they not have postfixed?	should I not have been postfixing? should you not have been postfixing? should he not have been postfixing? should we not have been postfixing? should you not have been postfixing? should they not have been postfixing?