English verb conjugation
SHOULD REGRESS

Regular verb: regress - regressed - regressed

Affirmation

Simple form	V-ing form
I should regress you should regress he should regress we should regress you should regress they should regress	I should be regressing you should be regressing he should be regressing we should be regressing you should be regressing they should be regressing
Perfect	V-ing perfect
I should have regressed you should have regressed he should have regressed we should have regressed you should have regressed they should have regressed	I should have been regressing you should have been regressing he should have been regressing we should have been regressing you should have been regressing they should have been regressing

Negation

Simple form	V-ing form
I should not regress you should not regress he should not regress we should not regress you should not regress they should not regress	I should not be regressing you should not be regressing he should not be regressing we should not be regressing you should not be regressing they should not be regressing
Perfect	V-ing perfect
I should not have regressed you should not have regressed he should not have regressed we should not have regressed you should not have regressed they should not have regressed	I should not have been regressing you should not have been regressing he should not have been regressing we should not have been regressing you should not have been regressing they should not have been regressing

Interrogative form

Simple form	V-ing form
should I regress? should you regress? should he regress? should we regress? should you regress? should they regress?	should I be regressing? should you be regressing? should he be regressing? should we be regressing? should you be regressing? should they be regressing?
Perfect	V-ing perfect
should I have regressed? should you have regressed? should he have regressed? should we have regressed? should you have regressed? should they have regressed?	should I have been regressing? should you have been regressing? should he have been regressing? should we have been regressing? should you have been regressing? should they have been regressing?

Interro-negative form

Simple form	V-ing form
should I not regress? should you not regress? should he not regress? should we not regress? should you not regress? should they not regress?	should I not be regressing? should you not be regressing? should he not be regressing? should we not be regressing? should you not be regressing? should they not be regressing?
Perfect	V-ing perfect
should I not have regressed? should you not have regressed? should he not have regressed? should we not have regressed? should you not have regressed? should they not have regressed?	should I not have been regressing? should you not have been regressing? should he not have been regressing? should we not have been regressing? should you not have been regressing? should they not have been regressing?