The Czech and Slovak languages use an apostrophe rather than a caron for U+010F  LATIN SMALL LETTER D WITH CARON, U+013D  LATIN CAPITAL LETTER L WITH CARON, U+013F  LATIN CAPITAL LETTER L WITH MIDDLE DOT and U+0165  LATIN SMALL LETTER T WITH CARON (see top row). This may also be the preferred form for other languages as well and is what is used in the Unicode Standard. However, for the IPA and for other languages using the caron above the "d", "L", "l" and "t" it has been quite confusing. For those languages it is best to put the caron above the character (as in the bottom row).