They all contain numerous diacritic marks for which musical equivalents could be deduced.
No diacritic marks are normally used for native English words, unless the apostrophe and the diaeresis sign are counted as such.
Even pinyin using diacritic marks has problems.
The diacritic mark may be left out on some sites or may not display correctly.
The one or more diacritic components are then distinguished and isolated from the base portion of the character.
But it has now lost its appeal largely because a total of 136 syllables require additional phonetic signs or diacritic marks, making it a fairly cumbersome system for printing and typing.
It's actually a pretty straightforward quiz, no questions about the minor uses of parentheses or diacritics or anything like that.
Keep in mind that the bibliography is diacritically sensitive: theologie will not return records that have théologie.
Y. R. Chao was also known for the romanization of Chinese that he promoted, the Gwoyeu Romatzyh, whose distinguishing feature is that it indicates tone by changes in the letters used, not by diacritics .
Admittedly a lot of those are basic Roman characters with diacritics but the exact positioning of the diacritic can be tricky - and it can sometimes modify the basic character shape.