1 2 th ▁as ▁the ▁second ▁highest ▁division ▁since ▁its ▁establishment ▁in ▁ 1 9 9 1 . ▁The ▁season ▁featured ▁ 1 9 ▁teams ▁from ▁the ▁ 2 0 1 1 – 1 2 ▁A za de gan ▁League , ▁three ▁new ▁teams ▁re leg ated ▁from ▁the ▁ 2 0 1 1 – 1 2 ▁Pers ian ▁G ulf ▁Cup : ▁Shah in ▁Bus he hr , ▁Shah rd ari ▁Tab riz ▁and ▁Mes ▁S arch esh me h ▁and ▁four ▁new ▁teams ▁promoted ▁from ▁the ▁ 2 0 1 1 – 1 2 ▁ 2 nd ▁Division : ▁Est eg hl al ▁Ah v az ▁as ▁champions , ▁G ost ares h ▁Fou lad ▁and ▁H af ari ▁Ah v az . ▁Al v and ▁H amed an ▁replaced ▁P AS ▁Nov in ▁H amed an , ▁B arg h ▁Sh ira z ▁replaced ▁Ste el ▁Az in ▁and ▁Sang ▁A han ▁replaced ▁Tar bi at ▁Y az d . ▁The ▁league ▁started ▁on ▁ 1 3 ▁September ▁ 2 0 1 2 ▁and ▁ended ▁on ▁ 1 6 ▁April ▁ 2 0 1 3 . ▁G ost ares h ▁Fou lad ▁and ▁Est eg hl al ▁Kh uz est an ▁won ▁the ▁A za de gan ▁League ▁title ▁for ▁the ▁first ▁time ▁in ▁their ▁history . ▁G ost ares h ▁Fou lad ▁and ▁Est eg hl al ▁Kh uz est an ▁promoted ▁to ▁the ▁Pers ian ▁G ulf ▁Cup . ▁ ▁Ch anges ▁▁ ▁At ▁the ▁end ▁of ▁