Grave accent, a backtick-like slanting stroke used in polytonic Greek, standalone spacing form.
U+1FEEGREEK DIALYTIKA AND OXIAU+1FEDGREEK DIALYTIKA AND VARIAU+1FECGREEK CAPITAL LETTER RHO WITH DASIAU+1FF2GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENIU+1FEBGREEK CAPITAL LETTER UPSILON WITH OXIAU+1FF3GREEK SMALL LETTER OMEGA WITH YPOGEGRAMMENIU+1FEAGREEK CAPITAL LETTER UPSILON WITH VARIAU+1FF4GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENIU+1FE9GREEK CAPITAL LETTER UPSILON WITH MACRONU+1FE8GREEK CAPITAL LETTER UPSILON WITH VRACHYU+1FF6GREEK SMALL LETTER OMEGA WITH PERISPOMENIU+1FE7GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND PERISPOMENI233 characters in the Greek Extended Unicode block, from number 221.
U+1FEFGREEK VARIAU+1FF2GREEK SMALL LETTER OMEGA WITH VARIA AND YPOGEGRAMMENIU+1FF3GREEK SMALL LETTER OMEGA WITH YPOGEGRAMMENIU+1FF4GREEK SMALL LETTER OMEGA WITH OXIA AND YPOGEGRAMMENIU+1FF6GREEK SMALL LETTER OMEGA WITH PERISPOMENIU+1FF7GREEK SMALL LETTER OMEGA WITH PERISPOMENI AND YPOGEGRAMMENIU+1FF8GREEK CAPITAL LETTER OMICRON WITH VARIAU+1FF9GREEK CAPITAL LETTER OMICRON WITH OXIAU+1FFAGREEK CAPITAL LETTER OMEGA WITH VARIAU+1FFBGREEK CAPITAL LETTER OMEGA WITH OXIAU+1FFCGREEK CAPITAL LETTER OMEGA WITH PROSGEGRAMMENIU+1FFDGREEK OXIAU+1FFEGREEK DASIA