5 verses have
Au
in Edition English Transliteration / Abasa (He frowned)

80:4Au yaz zak karu fatanfa 'ahuz zikraa.

80:34Yauma yafir-rul mar-u min akheeh

80:37Likul limri-im-minuhm yaumaa-izin shaa nuy-yughneeh

80:38Wujoo huny-yauma-izim-musfira;

80:40Wa wujoohuy yauma-izin 'alaiha ghabar a