private static void addRepresentativeHangul(
UnicodeSet resultToAddTo, int leng, boolean noFirstConsonant) {
UnicodeSet notYetSeen = new UnicodeSet();
for (char c = '\uAC00'; c < '\uD7AF'; ++c) {
String charStr = String.valueOf(c);
String decomp = Normalizer.decompose(charStr, false);
if (decomp.length() != leng) {
continue; // only take one length at a time
}
if (decomp.startsWith("ᄋ") != noFirstConsonant) {
continue;
}
if (!notYetSeen.containsAll(decomp)) {
resultToAddTo.add(c);
notYetSeen.addAll(decomp);
}
}
}
