The Unicode Standard v. 5.1 has double acute accent over ‘O’, ‘o’, ‘U’ and ‘u’ in Latin Extended-A. This subrange contains additional characters with double acute accent. The Unicode Standard advises encoding characters of this type as a sequence of the baseline character and the COMBINING DOUBLE ACUTE ACCENT (030B), and this way of encoding has been given as an alternative for each character below.
LATIN CAPITAL LETTER A WITH DOUBLE ACUTE
LATIN CAPITAL LETTER AE WITH DOUBLE ACUTE
LATIN CAPITAL LETTER E WITH DOUBLE ACUTE
LATIN CAPITAL LETTER I WITH DOUBLE ACUTE
LATIN CAPITAL LETTER J WITH DOUBLE ACUTE
LATIN CAPITAL LETTER P WITH DOUBLE ACUTE
LATIN CAPITAL LETTER V WITH DOUBLE ACUTE
LATIN CAPITAL LETTER W WITH DOUBLE ACUTE
LATIN CAPITAL LETTER Y WITH DOUBLE ACUTE
LATIN SMALL LETTER A WITH DOUBLE ACUTE
LATIN SMALL LETTER AE WITH DOUBLE ACUTE
LATIN SMALL LETTER E WITH DOUBLE ACUTE
LATIN SMALL LETTER I WITH DOUBLE ACUTE
LATIN SMALL LETTER J WITH DOUBLE ACUTE
LATIN SMALL LETTER P WITH DOUBLE ACUTE
LATIN SMALL LETTER V WITH DOUBLE ACUTE
LATIN SMALL LETTER W WITH DOUBLE ACUTE
LATIN SMALL LETTER Y WITH DOUBLE ACUTE
LATIN CAPITAL LIGATURE AO WITH DOUBLE ACUTE
LATIN SMALL LIGATURE AO WITH DOUBLE ACUTE
LATIN CAPITAL LIGATURE AV WITH DOUBLE ACUTE
LATIN SMALL LIGATURE AV WITH DOUBLE ACUTE
LATIN CAPITAL LETTER O WITH STROKE AND DOUBLE ACUTE
LATIN SMALL LETTER O WITH STROKE AND DOUBLE ACUTE
LATIN CAPITAL LIGATURE OE WITH DOUBLE ACUTE
LATIN SMALL LIGATURE OE WITH DOUBLE ACUTE
LATIN CAPITAL LIGATURE YY WITH DOUBLE ACUTE
LATIN SMALL LIGATURE YY WITH DOUBLE ACUTE
LATIN SMALL LIGATURE UU WITH DOUBLE ACUTE
LATIN CAPITAL LIGATURE UU WITH DOUBLE ACUTE
LATIN CAPITAL LIGATURE AA WITH DOUBLE ACUTE
LATIN SMALL LIGATURE AA WITH DOUBLE ACUTE
LATIN CAPITAL LIGATURE OO WITH DOUBLE ACUTE
LATIN SMALL LIGATURE OO WITH DOUBLE ACUTE