#include <stdio.h>
int main() {
    int num1, num2;
    int digits[10] = {0}, digits2[10] = {0};
    int found = 0;
    scanf("%d %d", &num1, &num2);
    int temp = num1;
    if (temp == 0)
    digits1[0] = 1;
    while (temp > 0) {
        digits1[temp % 10] = 1;
        temp /= 10;
    }
    temp = num2;
    if (temp == 0)
    digits2[0] = 1;
    while (temp > 0) {
        digits2[temp % 10] = 1;
        temp /= 10;
    }
    for (int i = 0; i < 10; i++) {
        if (digits1[i] && digits2[i]) {
            printf("%d ", i);
            found = 1;
        }
    }
    if (!found)
    printf("No common elements");
    return 0;
}