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