import java.util.ArrayList;
 
class eraseDuplicates {
    public static void main(String args[]) {
        tryWith("あんぱんまんのあんはつぶあん、こしあんのどちら？");
        tryWith("しんせんえんさつのしょうぞうはだれ？");
        tryWith("99さいのおいわいをあるいろをもちいてなんという？");
        tryWith("せかいいちふかいみずうみは？");
        tryWith("みみかきについているふさふさのぶぶんをなんという？");
        tryWith("コンゴみんしゅ共和国の首都はきんしゃさですが、" + 
        "コンゴ共和国の首都はどこでしょう？");
        tryWith("すももももももなにか？");
        tryWith("あさはさんぼんひるはにほんよるはよんほんこれはな～んだ？");
    }
 
    public static void tryWith(String str) {
        char[] chars = str.toCharArray();
        ArrayList<Character> strToChar = new ArrayList<>();
 
        System.out.println(str);
 
        for (Character c : chars) {
            strToChar.add(c);
        }
 
        for (int i = 0; i < strToChar.size(); i++) {
            for (int j = 0; j < strToChar.size(); j++) {
                if (i >= 0 && j != i && strToChar.get(j).equals(strToChar.get(i))) {
                    strToChar.remove(j);
                    strToChar.remove(i);
                    i--;
                    for (Character x : strToChar) {
                        System.out.print(x);
                    }
                    System.out.println();
                }
            }
        }
        System.out.println();
    }
}

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