public static List<String> solution(String panel, String[] codes) {
        List<String> results = new ArrayList<>();
        for (String code : codes) {
            int codeLength = code.length();
            boolean found = false;
            for (int i = 1; i <= codeLength; i++) {
                String indexStr = code.substring(0, i);
                String pattern = code.substring(i);
                int index = Integer.parseInt(indexStr);
                if (pattern.length() >= 1) {
                    if (index < panel.length() && panel.substring(index).startsWith(pattern)) {
                        results.add(pattern);
                        found = true;
                    } else {
                        results.add("not found");
                    }
                }
            }
        }
        return results;
    }