Test passes if both characters in each pair match. If you are missing a font glyph for a character, ignore that pair, but report which characters were ignored.
ἀ Ἀ ἁ Ἁ ἂ Ἂ ἃ Ἃ ἄ Ἄ ἅ Ἅ ἆ Ἆ ἇ Ἇ ἐ Ἐ ἑ Ἑ ἒ Ἒ ἓ Ἓ ἔ Ἔ ἕ Ἕ ἠ Ἠ ἡ Ἡ ἢ Ἢ ἣ Ἣ ἤ Ἤ ἥ Ἥ ἦ Ἦ ἧ Ἧ ἰ Ἰ ἱ Ἱ ἲ Ἲ ἳ Ἳ ἴ Ἴ ἵ Ἵ ἶ Ἶ ἷ Ἷ ὀ Ὀ ὁ Ὁ ὂ Ὂ ὃ Ὃ ὄ Ὄ ὅ Ὅ ὑ Ὑ ὓ Ὓ ὕ Ὕ ὗ Ὗ ὠ Ὠ ὡ Ὡ ὢ Ὢ ὣ Ὣ ὤ Ὤ ὥ Ὥ ὦ Ὦ ὧ Ὧ ὰ Ὰ ά Ά ὲ Ὲ έ Έ ὴ Ὴ ή Ή ὶ Ὶ ί Ί ὸ Ὸ ό Ό ὺ Ὺ ύ Ύ ὼ Ὼ ώ Ώ ᾀ ᾈ ᾁ ᾉ ᾂ ᾊ ᾃ ᾋ ᾄ ᾌ ᾅ ᾍ ᾆ ᾎ ᾇ ᾏ ᾐ ᾘ ᾑ ᾙ ᾒ ᾚ ᾓ ᾛ ᾔ ᾜ ᾕ ᾝ ᾖ ᾞ ᾗ ᾟ ᾠ ᾨ ᾡ ᾩ ᾢ ᾪ ᾣ ᾫ ᾤ ᾬ ᾥ ᾭ ᾦ ᾮ ᾧ ᾯ ᾰ Ᾰ ᾱ Ᾱ ᾳ ᾼ ι Ι ῃ ῌ ῐ Ῐ ῑ Ῑ ῠ Ῠ ῡ Ῡ ῥ Ῥ ῳ ῼ