How do you conjugate Ser in the imperfect tense?

Ser is irregular in the imperfect tense

See the tables below for the full conjugations in both positive and negative forms.

Spanish	English
yo era	I was being, I used to be
tú eras	you were being, you used to be
él era	he/she/it was being, he/she/it used to be
nosotros éramos	we were being, we used to be
vosotros erais	you were being, you used to be
ellos eran	they were being, they used to be

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Spanish	English
yo no era	I was not being, I never used to be
tú no eras	you were not being, you never used to be
él no era	he/she/it was not being, he/she/it never used to be
nosotros no éramos	we were not being, we never used to be
vosotros no erais	you were not being, you never used to be
ellos no eran	they were not being, they never used to be