#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)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;
    }
    if(found = 0)
    for(int i =0; i<10; i++)
    {
        if(digits[i] && digits2[i]){
            printf("%d ", i);
            found = 1;
        }
    }
    if(!found){
        print("No common elements");
    }
    return 0;
 }