That's a pointless quiz. The Cyrillic characters are not acceptable answers. Also - S, Z, I, the sign after П, the two signs between Т and Ф, the one after Х and all signs after ъ except Ю and Я are not part of the normal Cyrillic alphabet. Some of them are used in Serbian, Macedonian and/or Russian, but still they are not used by everybody. Psi, Xi and a bunch of others are simply Greek letters and they don't have place in this quiz.
You should specify that it's the names of the letters you want. And are all of these letters used in any one language? Ȣ at least is not a cyrillic letter.