English verb conjugation
SHOULD GAS

Regular verb: gas - gassed - gassed

Affirmation

Simple form	V-ing form
I should gas you should gas he should gas we should gas you should gas they should gas	I should be gassing you should be gassing he should be gassing we should be gassing you should be gassing they should be gassing
Perfect	V-ing perfect
I should have gassed you should have gassed he should have gassed we should have gassed you should have gassed they should have gassed	I should have been gassing you should have been gassing he should have been gassing we should have been gassing you should have been gassing they should have been gassing

Negation

Simple form	V-ing form
I should not gas you should not gas he should not gas we should not gas you should not gas they should not gas	I should not be gassing you should not be gassing he should not be gassing we should not be gassing you should not be gassing they should not be gassing
Perfect	V-ing perfect
I should not have gassed you should not have gassed he should not have gassed we should not have gassed you should not have gassed they should not have gassed	I should not have been gassing you should not have been gassing he should not have been gassing we should not have been gassing you should not have been gassing they should not have been gassing

Interrogative form

Simple form	V-ing form
should I gas? should you gas? should he gas? should we gas? should you gas? should they gas?	should I be gassing? should you be gassing? should he be gassing? should we be gassing? should you be gassing? should they be gassing?
Perfect	V-ing perfect
should I have gassed? should you have gassed? should he have gassed? should we have gassed? should you have gassed? should they have gassed?	should I have been gassing? should you have been gassing? should he have been gassing? should we have been gassing? should you have been gassing? should they have been gassing?

Interro-negative form

Simple form	V-ing form
should I not gas? should you not gas? should he not gas? should we not gas? should you not gas? should they not gas?	should I not be gassing? should you not be gassing? should he not be gassing? should we not be gassing? should you not be gassing? should they not be gassing?
Perfect	V-ing perfect
should I not have gassed? should you not have gassed? should he not have gassed? should we not have gassed? should you not have gassed? should they not have gassed?	should I not have been gassing? should you not have been gassing? should he not have been gassing? should we not have been gassing? should you not have been gassing? should they not have been gassing?