#include<stdio.h>
int main(){
    int num1,num2;
    int digit_present[10]={0};
    int temp,digit,found_common=0;
    int first_output=1;
    scanf("%d%d",&num1,&num2);
    temp=num1;
    if(temp==0){
        digit_present[0]=1;
    }
    while(temp>0){
        digit=temp%10;
        digit_present[0]=1;
        temp/=10;
    }
    temp=num2;
    if(temp==0){
        if(digit_present[0]==1){
            digit_common[0]=1;
            found_common=1;
        }
    }
    while(temp>0){
        digit=temp%10;
        if(digit_present[digit]==1){
            digit_common[digit]==1;
            found_common=1;
        }
        temp/10;
    }
    if(found_common){
        for(digit=0;digit<=9;digit++){
            if(digit_common[digit]==1){
                if(!first_output){
                    printf(" ");
                }
                printf("%d",digit);
                first_output=0;
            }
        }
        printf("\n");
    }else{
        printf("No common elements\n");
    }
    return 0;
}