English verb conjugation
SHOULD NULL

Regular verb: null - nulled - nulled

Affirmation

Simple form	V-ing form
I should null you should null he should null we should null you should null they should null	I should be nulling you should be nulling he should be nulling we should be nulling you should be nulling they should be nulling
Perfect	V-ing perfect
I should have nulled you should have nulled he should have nulled we should have nulled you should have nulled they should have nulled	I should have been nulling you should have been nulling he should have been nulling we should have been nulling you should have been nulling they should have been nulling

Negation

Simple form	V-ing form
I should not null you should not null he should not null we should not null you should not null they should not null	I should not be nulling you should not be nulling he should not be nulling we should not be nulling you should not be nulling they should not be nulling
Perfect	V-ing perfect
I should not have nulled you should not have nulled he should not have nulled we should not have nulled you should not have nulled they should not have nulled	I should not have been nulling you should not have been nulling he should not have been nulling we should not have been nulling you should not have been nulling they should not have been nulling

Interrogative form

Simple form	V-ing form
should I null? should you null? should he null? should we null? should you null? should they null?	should I be nulling? should you be nulling? should he be nulling? should we be nulling? should you be nulling? should they be nulling?
Perfect	V-ing perfect
should I have nulled? should you have nulled? should he have nulled? should we have nulled? should you have nulled? should they have nulled?	should I have been nulling? should you have been nulling? should he have been nulling? should we have been nulling? should you have been nulling? should they have been nulling?

Interro-negative form

Simple form	V-ing form
should I not null? should you not null? should he not null? should we not null? should you not null? should they not null?	should I not be nulling? should you not be nulling? should he not be nulling? should we not be nulling? should you not be nulling? should they not be nulling?
Perfect	V-ing perfect
should I not have nulled? should you not have nulled? should he not have nulled? should we not have nulled? should you not have nulled? should they not have nulled?	should I not have been nulling? should you not have been nulling? should he not have been nulling? should we not have been nulling? should you not have been nulling? should they not have been nulling?