#include<stdio.h>
#include<stdlib.h>
int main(){
    int num1,num2;
    scanf("%d %d",&num1,&num2);
    bool digits1[10] = {false};
    bool digits2[10] ={false};
    if(num1 == 0){
        digits1[0]=true;
    }
    if(num2 == 0){
        digits2[0] = true;
    }
    int temp1 = num1;
    while(temp1>0){
        digits1[temp1 % 10] = true;
        temp1 /=10
    }
    int temp2 = num2;
    while(temp2>0){
        digits2[temp2 % 10] = true;
        temp2 /=10;
    }
    bool found_common =false;
    for(int i = 0;i<10;i++){
        if(digits1[i] && digits2[i]){
            printf("%d ",i);
            found_common =true;
        }
    }
    if (!found_common){
        printf("No common elements");
    }
    printf("\n");
    return 0;
}