English verb conjugation
SHOULD MASS

Regular verb: mass - massed - massed

Affirmation

Simple form	V-ing form
I should mass you should mass he should mass we should mass you should mass they should mass	I should be massing you should be massing he should be massing we should be massing you should be massing they should be massing
Perfect	V-ing perfect
I should have massed you should have massed he should have massed we should have massed you should have massed they should have massed	I should have been massing you should have been massing he should have been massing we should have been massing you should have been massing they should have been massing

Negation

Simple form	V-ing form
I should not mass you should not mass he should not mass we should not mass you should not mass they should not mass	I should not be massing you should not be massing he should not be massing we should not be massing you should not be massing they should not be massing
Perfect	V-ing perfect
I should not have massed you should not have massed he should not have massed we should not have massed you should not have massed they should not have massed	I should not have been massing you should not have been massing he should not have been massing we should not have been massing you should not have been massing they should not have been massing

Interrogative form

Simple form	V-ing form
should I mass? should you mass? should he mass? should we mass? should you mass? should they mass?	should I be massing? should you be massing? should he be massing? should we be massing? should you be massing? should they be massing?
Perfect	V-ing perfect
should I have massed? should you have massed? should he have massed? should we have massed? should you have massed? should they have massed?	should I have been massing? should you have been massing? should he have been massing? should we have been massing? should you have been massing? should they have been massing?

Interro-negative form

Simple form	V-ing form
should I not mass? should you not mass? should he not mass? should we not mass? should you not mass? should they not mass?	should I not be massing? should you not be massing? should he not be massing? should we not be massing? should you not be massing? should they not be massing?
Perfect	V-ing perfect
should I not have massed? should you not have massed? should he not have massed? should we not have massed? should you not have massed? should they not have massed?	should I not have been massing? should you not have been massing? should he not have been massing? should we not have been massing? should you not have been massing? should they not have been massing?