class Solution {
    public List<String> stringMatching(String[] words) {
        List<String> list = new ArrayList<>();
        
        for(String w : words)
        {
            for(String s : words)
            {
                if(s.length() < w.length())
                {
                    if(w.contains(s) && !list.contains(s))
                    {
                        list.add(s);
                    }
                }
            }
        }
        return list;
    }
}