code: package zemberek.scratchpad;
  
  import com.google.common.collect.HashMultimap;
  import java.io.IOException;
  import java.nio.file.Files;
  import java.nio.file.Paths;
  import java.util.ArrayList;
  import java.util.LinkedHashSet;
  import java.util.List;
  import zemberek.core.turkish.RootAttribute;
  import zemberek.core.turkish.SecondaryPos;
  import zemberek.core.turkish.Turkish;
  import zemberek.core.turkish.TurkishAlphabet;
  import zemberek.morphology.lexicon.DictionaryItem;
  import zemberek.morphology.lexicon.RootLexicon;
  import zemberek.morphology.lexicon.tr.TurkishDictionaryLoader;
  
  public class Syllables {
  
    public static void getTwoConsonantStartWords() throws IOException {
      HashMultimap<String, String> map = HashMultimap.create();
  
      RootLexicon lexicon = TurkishDictionaryLoader.loadDefaultDictionaries();
      for (DictionaryItem item : lexicon) {
  
        String lemma = item.lemma;
        if (item.attributes.contains(RootAttribute.Dummy)) {
          continue;
        }
        if (item.secondaryPos == SecondaryPos.Abbreviation) {
          continue;
        }
        if (lemma.length() < 4 || TurkishAlphabet.INSTANCE.vowelCount(lemma) < 2) {
          continue;
        }
        if (!TurkishAlphabet.INSTANCE.isVowel(lemma.charAt(0)) &&
            !TurkishAlphabet.INSTANCE.isVowel(lemma.charAt(1))) {
          map.put(lemma.substring(0, 2), lemma);
        }
      }
      List<String> list = new ArrayList<>(map.keySet());
      list.sort((a, b) -> Integer.compare(
          map.get(b).size(),
          map.get(a).size()));
  
      List<String> result = new ArrayList<>();
      List<String> acceptedPrefixes = new ArrayList<>();
      for (String s : list) {
        result.add(s + " " + String.join(",", map.get(s)));
        if (Character.isUpperCase(s.charAt(0))) {
          if (map.get(s).size() > 3) {
            acceptedPrefixes.add(s.substring(0, 2).toLowerCase(Turkish.LOCALE));
          }
        } else {
          acceptedPrefixes.add(s.substring(0, 2).toLowerCase(Turkish.LOCALE));
        }
      }
      acceptedPrefixes = new ArrayList<>(new LinkedHashSet<>(acceptedPrefixes));
      acceptedPrefixes.sort(Turkish.STRING_COMPARATOR_ASC);
  
      Files.write(Paths.get("two-consonant-words"), list);
      Files.write(Paths.get("two-consonant-words.all"), result);
      Files.write(Paths.get("accepted-syllable-prefixes"), acceptedPrefixes);
  
  
    }
  
    public static void main(String[] args) throws IOException {
      getTwoConsonantStartWords();
    }
  
  }
  