code: function isPlural(token){
      var matches = token.match(/^(.*)-(ku|mu|nya|lah|kah|tah|pun)$/);
      if(matches){
          return matches[1].search('-') != -1;
      }
      return token.search('-') != -1;
  }
docs: Return true if word is in plural form ex: gelas-gelas, else false