import java.util.Scanner;

public class TravelerChallenge {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int M = sc.nextInt();
        int N = sc.nextInt();
        if (M < 0 || N < 0) {
            System.out.println("Invalid Input");
            return;
        }
        for (int i = M; i <= N; i++) {
            int reversed = Integer.parseInt(new StringBuilder(String.valueOf(i)).reverse().toString());
            if (reversed < i) {
                System.out.print(reversed * 2 + " ");
            } else if (reversed > i) {
                System.out.print(reversed - 1 + " ");
            } else {
                System.out.print(reversed + 10 + " ");
            }
        }
    }
}