Анаграми

import java.io.InputStream;
import java.util.*;

public class Anagrams {

    public static void main(String[] args) {
        findAll(System.in);
    }

    public static void findAll(InputStream inputStream) {


        Scanner scanner = new Scanner(inputStream);
        Map<String, List<String>> mapa = new TreeMap<>();
        Map<String, String> keyTokey = new TreeMap<>();


        while (scanner.hasNext()) {


            String zbor = scanner.nextLine();

            if(keyTokey.containsKey(sortedString(zbor))){
                mapa.get(keyTokey.get(sortedString(zbor))).add(zbor);
            }else{
                List<String> list = new LinkedList<>();
                list.add(zbor);
                mapa.put(zbor, list);
                keyTokey.put(sortedString(zbor), zbor);
            }

        }
        scanner.close();


        for (String key : mapa.keySet()) {
            if(mapa.get(key).size()>4)
            System.out.println(String.join(" ", mapa.get(key)));
        }

    }

    public static String removeWhitespaces(String word) {
        return word.replaceAll("\\s+", "");
    }

    public static String sortedString(String s){
        s = removeWhitespaces(s);
        char[] c = s.toCharArray();
        Arrays.sort(c);
        return new String(c);
    }
}