English verb conjugation
SHOULD SHIFT

Regular verb: shift - shifted - shifted

Affirmation

Simple form	V-ing form
I should shift you should shift he should shift we should shift you should shift they should shift	I should be shifting you should be shifting he should be shifting we should be shifting you should be shifting they should be shifting
Perfect	V-ing perfect
I should have shifted you should have shifted he should have shifted we should have shifted you should have shifted they should have shifted	I should have been shifting you should have been shifting he should have been shifting we should have been shifting you should have been shifting they should have been shifting

Negation

Simple form	V-ing form
I should not shift you should not shift he should not shift we should not shift you should not shift they should not shift	I should not be shifting you should not be shifting he should not be shifting we should not be shifting you should not be shifting they should not be shifting
Perfect	V-ing perfect
I should not have shifted you should not have shifted he should not have shifted we should not have shifted you should not have shifted they should not have shifted	I should not have been shifting you should not have been shifting he should not have been shifting we should not have been shifting you should not have been shifting they should not have been shifting

Interrogative form

Simple form	V-ing form
should I shift? should you shift? should he shift? should we shift? should you shift? should they shift?	should I be shifting? should you be shifting? should he be shifting? should we be shifting? should you be shifting? should they be shifting?
Perfect	V-ing perfect
should I have shifted? should you have shifted? should he have shifted? should we have shifted? should you have shifted? should they have shifted?	should I have been shifting? should you have been shifting? should he have been shifting? should we have been shifting? should you have been shifting? should they have been shifting?

Interro-negative form

Simple form	V-ing form
should I not shift? should you not shift? should he not shift? should we not shift? should you not shift? should they not shift?	should I not be shifting? should you not be shifting? should he not be shifting? should we not be shifting? should you not be shifting? should they not be shifting?
Perfect	V-ing perfect
should I not have shifted? should you not have shifted? should he not have shifted? should we not have shifted? should you not have shifted? should they not have shifted?	should I not have been shifting? should you not have been shifting? should he not have been shifting? should we not have been shifting? should you not have been shifting? should they not have been shifting?