/*
 Author: 曹北健
 Result: WA    Submission_id: 4531247
 Created at: Tue Jun 14 2022 19:57:03 GMT+0800 (China Standard Time)
 Problem_id: 4646    Time: 3    Memory: 1652
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <ctype.h>
#include <string.h>
#pragma warning(disable:4996)
typedef long long LL;
char s1[114514] = { 0 }, s2[114514] = { 0 };
char data1[128][128] = { 0 };
char common[128][128] = { 0 };
int cmparr(const void *p, const void *q){
    return strcmp((char *)p, (char *)q);
}
int main(){
#ifdef _DEBUG
    //fclose(stdin);
    freopen("../../../in.txt", "rb", stdin);
    //freopen("../../../out.txt", "w", stdout);
#endif // _DEBUG
    char tmp[128] = { 0 }, buf1[128] = { 0 };
    char *end, *p;
    int l, k1 = 0, i, k2 = 0, j, flag = 0;
    fgets(s1, 114514, stdin);
    end = strrchr(s1, '}');
    *end = 0;
    p = strtok(s1 + 1, ",");
    while(p){
        l = 0;
        //strcpy(data1[k1], p);
        for(i = 0; p[i]; i++){
            if(isalpha(p[i])){
                data1[k1][l] = p[i];
                l++;
            }
        }
        p = strtok(0, ",");
        k1++;
    }
    fgets(s2, 114514, stdin);
    end = strrchr(s2, '}');
    *end = 0;
    p = strtok(s2 + 1, ",");
    while(p){
        //strcpy(tmp, p);
        l = 0;
        memset(tmp, 0, 128);
        for(i = 0; p[i]; i++){
            if(isalpha(p[i])){
                tmp[l] = p[i];
                l++;
            }
        }
        for(i = 0; i < k1; i++){
            if(!strcmp(tmp, data1[i])){
                flag = 0;
                for(j = 0; j < k2; j++){
                    if(!strcmp(tmp,common[j])){
                        flag = 1;
                        break;
                    }
                }
                if(!flag){
                    strcpy(common[k2], tmp);
                    k2++;
                }
                break;
            }
        }
        p = strtok(0, ",");
    }
    if(k2){
        qsort(common, k2, 128, cmparr);
        for(i = 0; i < k2; i++){
            printf("%s ", common[i]);
        }
    }
    else{
        puts("NONE");
    }
#ifdef _DEBUG
    freopen("CON", "rb", stdin);
    //freopen("CON", "w", stdout);
    system("pause");
#endif // _DEBUG
    return 0;
}