#include <iostream>
using namespace std;

.
bool isArithmetic(int num) {
    int digit1 = num % 10;
    num /= 10;
    int digit2 = num % 10;
    int diff = digit2 - digit1;
    num /= 10;

    while (num > 0) {
        digit1 = digit2;
        digit2 = num % 10;
        if (digit2 - digit1 != diff) {
            return false;
        }
        num /= 10;
    }
    return true;
}

int main() {
    int m, n;
    cin >> m >> n;

    for (int i = m; i <= n; i++) {
        if (isArithmetic(i)) {
            cout << i << endl;
        }
    }

    return 0;
}   
/**************************************************************
	Problem: 1466
	User: panyuchen
	Language: C++
	Result: Compile Error
****************************************************************/