docs: public static String stripAntyaVarna(String s1)
      {
          int str_len = s1.length();
          String stripped1 = s1.substring(0, str_len - 1); // removes the
                                                              // terminal phoneme
  
          if (s1.endsWith("3") && str_len >= 2)
          {
              stripped1 = stripAntyaVarna(stripped1);
          }
  
          return stripped1;
      }