English verb conjugation
SHOULD CREDIT

Regular verb: credit - credited - credited

Affirmation

Simple form	V-ing form
I should credit you should credit she should credit we should credit you should credit they should credit	I should be crediting you should be crediting she should be crediting we should be crediting you should be crediting they should be crediting
Perfect	V-ing perfect
I should have credited you should have credited she should have credited we should have credited you should have credited they should have credited	I should have been crediting you should have been crediting she should have been crediting we should have been crediting you should have been crediting they should have been crediting

Negation

Simple form	V-ing form
I should not credit you should not credit she should not credit we should not credit you should not credit they should not credit	I should not be crediting you should not be crediting she should not be crediting we should not be crediting you should not be crediting they should not be crediting
Perfect	V-ing perfect
I should not have credited you should not have credited she should not have credited we should not have credited you should not have credited they should not have credited	I should not have been crediting you should not have been crediting she should not have been crediting we should not have been crediting you should not have been crediting they should not have been crediting

Interrogative form

Simple form	V-ing form
should I credit? should you credit? should she credit? should we credit? should you credit? should they credit?	should I be crediting? should you be crediting? should she be crediting? should we be crediting? should you be crediting? should they be crediting?
Perfect	V-ing perfect
should I have credited? should you have credited? should she have credited? should we have credited? should you have credited? should they have credited?	should I have been crediting? should you have been crediting? should she have been crediting? should we have been crediting? should you have been crediting? should they have been crediting?

Interro-negative form

Simple form	V-ing form
should I not credit? should you not credit? should she not credit? should we not credit? should you not credit? should they not credit?	should I not be crediting? should you not be crediting? should she not be crediting? should we not be crediting? should you not be crediting? should they not be crediting?
Perfect	V-ing perfect
should I not have credited? should you not have credited? should she not have credited? should we not have credited? should you not have credited? should they not have credited?	should I not have been crediting? should you not have been crediting? should she not have been crediting? should we not have been crediting? should you not have been crediting? should they not have been crediting?