_01_SymetricNumbersInRange

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class _01_SymetricNumbersInRange {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);

        int start = input.nextInt();
        int end = input.nextInt();

        for (int i = start; i <= end; i++) {
            List<Integer> arrIntegers = new ArrayList();
            int a = i;
            while (true) {
                if (a == 0) {
                    //arrIntegers.add(a % 10);
                    break;
                }
                arrIntegers.add(a % 10);
                a = a / 10;

            }
            if (arrIntegers.size() == 1) {
                System.out.print(arrIntegers.get(0) + " ");
            }
            if (arrIntegers.size() == 2) {
                if (arrIntegers.get(0) == arrIntegers.get(1)) {
                    for (Integer integer : arrIntegers) {
                        System.out.print(integer);
                    }
                    System.out.print(" ");
                }
            }
            if (arrIntegers.size() == 3) {
                if (arrIntegers.get(0) == arrIntegers.get(2)) {
                    for (Integer integer : arrIntegers) {
                        System.out.print(integer);
                    }
                    System.out.print(" ");
                }
            }
            if (arrIntegers.size() == 4) {
                if (arrIntegers.get(0) == arrIntegers.get(3)) {
                    for (Integer integer : arrIntegers) {
                        System.out.print(integer);
                    }
                    System.out.print(" ");
                }
            }
            //System.out.print(" ");
            for (int j = 0; j < arrIntegers.size(); j++) {
                arrIntegers.remove(j);
            }

        }
    }

}