docs: public String getPrathamVarna(String s1)
      {
          String returnString = "";
          if (VowelUtil.isVowel(s1.charAt(0)))
          {
              returnString = s1.substring(0, 1);
          }
  
          else if (VowelUtil.isConsonant(s1.charAt(0)) && s1.length() > 1)
          {
              returnString = s1.substring(0, 2);
          }
          return returnString;
      }