English verb conjugation
SHOULD CRACK

Regular verb: crack - cracked - cracked

Affirmation

Simple form	V-ing form
I should crack you should crack he should crack we should crack you should crack they should crack	I should be cracking you should be cracking he should be cracking we should be cracking you should be cracking they should be cracking
Perfect	V-ing perfect
I should have cracked you should have cracked he should have cracked we should have cracked you should have cracked they should have cracked	I should have been cracking you should have been cracking he should have been cracking we should have been cracking you should have been cracking they should have been cracking

Negation

Simple form	V-ing form
I should not crack you should not crack he should not crack we should not crack you should not crack they should not crack	I should not be cracking you should not be cracking he should not be cracking we should not be cracking you should not be cracking they should not be cracking
Perfect	V-ing perfect
I should not have cracked you should not have cracked he should not have cracked we should not have cracked you should not have cracked they should not have cracked	I should not have been cracking you should not have been cracking he should not have been cracking we should not have been cracking you should not have been cracking they should not have been cracking

Interrogative form

Simple form	V-ing form
should I crack? should you crack? should he crack? should we crack? should you crack? should they crack?	should I be cracking? should you be cracking? should he be cracking? should we be cracking? should you be cracking? should they be cracking?
Perfect	V-ing perfect
should I have cracked? should you have cracked? should he have cracked? should we have cracked? should you have cracked? should they have cracked?	should I have been cracking? should you have been cracking? should he have been cracking? should we have been cracking? should you have been cracking? should they have been cracking?

Interro-negative form

Simple form	V-ing form
should I not crack? should you not crack? should he not crack? should we not crack? should you not crack? should they not crack?	should I not be cracking? should you not be cracking? should he not be cracking? should we not be cracking? should you not be cracking? should they not be cracking?
Perfect	V-ing perfect
should I not have cracked? should you not have cracked? should he not have cracked? should we not have cracked? should you not have cracked? should they not have cracked?	should I not have been cracking? should you not have been cracking? should he not have been cracking? should we not have been cracking? should you not have been cracking? should they not have been cracking?