@Test
    public void shouldConfirmMatchTest(){
        Map<Character, Set<String>> testInput = new TreeMap<Character, Set<String>>()
                {{put('a', new TreeSet<>(Arrays.asList("ala", "javie", "kota", "ma")));
                    put('d', new TreeSet<>(Arrays.asList("koduje")));
                    put('e', new TreeSet<>(Arrays.asList("javie", "koduje")));
                    put('i', new TreeSet<>(Arrays.asList("javie")));
                    put('j', new TreeSet<>(Arrays.asList("javie", "koduje")));
                    put('k', new TreeSet<>(Arrays.asList("koduje", "kot", "kota")));
                    put('l', new TreeSet<>(Arrays.asList("ala")));
                    put('m', new TreeSet<>(Arrays.asList("ma")));
                    put('o', new TreeSet<>(Arrays.asList("koduje", "kot", "kota")));
                    put('t', new TreeSet<>(Arrays.asList("kot", "kota")));
                    put('u', new TreeSet<>(Arrays.asList("koduje")));
                    put('v', new TreeSet<>(Arrays.asList("javie")));
                    put('w', new TreeSet<>(Arrays.asList("w")));
                }};
        assertEquals(testInput, Main.something("ala ma kota, kot koduje w Javie kota"));