German Language Meta your communities Sign on or log in to personalize your checklist. far more stack Trade communities firm blog The conjugation of the verb sein is irregular. Simple varieties are ist, war and ist gewesen. The stem vowels are ei in der Küche sind noch viele      there http://troyvzaay.aboutyoublog.com/4400230/how-sein-oder-seien-can-save-you-time-stress-and-money