public static String makeExtremeSpacesOptional(String word) {
    if (word.trim().isEmpty()) return word;

    String result = word;
    if (word.startsWith(" ")) result = "(?:\\s|\\b)" + result.substring(1);
    if (word.endsWith(" ")) result = result.substring(0, result.length() - 1) + "(?:\\s|\\b)";
    return result;
  }
public static String makeExtremeSpacesOptional(String word)