English verb conjugation
SHOULD OPEN

Regular verb: open - opened - opened

Affirmation

Simple form	V-ing form
I should open you should open she should open we should open you should open they should open	I should be opening you should be opening she should be opening we should be opening you should be opening they should be opening
Perfect	V-ing perfect
I should have opened you should have opened she should have opened we should have opened you should have opened they should have opened	I should have been opening you should have been opening she should have been opening we should have been opening you should have been opening they should have been opening

Negation

Simple form	V-ing form
I should not open you should not open she should not open we should not open you should not open they should not open	I should not be opening you should not be opening she should not be opening we should not be opening you should not be opening they should not be opening
Perfect	V-ing perfect
I should not have opened you should not have opened she should not have opened we should not have opened you should not have opened they should not have opened	I should not have been opening you should not have been opening she should not have been opening we should not have been opening you should not have been opening they should not have been opening

Interrogative form

Simple form	V-ing form
should I open? should you open? should she open? should we open? should you open? should they open?	should I be opening? should you be opening? should she be opening? should we be opening? should you be opening? should they be opening?
Perfect	V-ing perfect
should I have opened? should you have opened? should she have opened? should we have opened? should you have opened? should they have opened?	should I have been opening? should you have been opening? should she have been opening? should we have been opening? should you have been opening? should they have been opening?

Interro-negative form

Simple form	V-ing form
should I not open? should you not open? should she not open? should we not open? should you not open? should they not open?	should I not be opening? should you not be opening? should she not be opening? should we not be opening? should you not be opening? should they not be opening?
Perfect	V-ing perfect
should I not have opened? should you not have opened? should she not have opened? should we not have opened? should you not have opened? should they not have opened?	should I not have been opening? should you not have been opening? should she not have been opening? should we not have been opening? should you not have been opening? should they not have been opening?