English verb conjugation
SHOULD OVERGRADE

Regular verb: overgrade - overgraded - overgraded

Affirmation

Simple form	V-ing form
I should overgrade you should overgrade he should overgrade we should overgrade you should overgrade they should overgrade	I should be overgrading you should be overgrading he should be overgrading we should be overgrading you should be overgrading they should be overgrading
Perfect	V-ing perfect
I should have overgraded you should have overgraded he should have overgraded we should have overgraded you should have overgraded they should have overgraded	I should have been overgrading you should have been overgrading he should have been overgrading we should have been overgrading you should have been overgrading they should have been overgrading

Negation

Simple form	V-ing form
I should not overgrade you should not overgrade he should not overgrade we should not overgrade you should not overgrade they should not overgrade	I should not be overgrading you should not be overgrading he should not be overgrading we should not be overgrading you should not be overgrading they should not be overgrading
Perfect	V-ing perfect
I should not have overgraded you should not have overgraded he should not have overgraded we should not have overgraded you should not have overgraded they should not have overgraded	I should not have been overgrading you should not have been overgrading he should not have been overgrading we should not have been overgrading you should not have been overgrading they should not have been overgrading

Interrogative form

Simple form	V-ing form
should I overgrade? should you overgrade? should he overgrade? should we overgrade? should you overgrade? should they overgrade?	should I be overgrading? should you be overgrading? should he be overgrading? should we be overgrading? should you be overgrading? should they be overgrading?
Perfect	V-ing perfect
should I have overgraded? should you have overgraded? should he have overgraded? should we have overgraded? should you have overgraded? should they have overgraded?	should I have been overgrading? should you have been overgrading? should he have been overgrading? should we have been overgrading? should you have been overgrading? should they have been overgrading?

Interro-negative form

Simple form	V-ing form
should I not overgrade? should you not overgrade? should he not overgrade? should we not overgrade? should you not overgrade? should they not overgrade?	should I not be overgrading? should you not be overgrading? should he not be overgrading? should we not be overgrading? should you not be overgrading? should they not be overgrading?
Perfect	V-ing perfect
should I not have overgraded? should you not have overgraded? should he not have overgraded? should we not have overgraded? should you not have overgraded? should they not have overgraded?	should I not have been overgrading? should you not have been overgrading? should he not have been overgrading? should we not have been overgrading? should you not have been overgrading? should they not have been overgrading?