#include<stdio.h>
void findCommonElements(int *arr1, int n, int *arr2, int m){
 int found = 0;
    for(int i = 0; i < n; i++){
        for(int j = 0; j < m; j++){
      if(*(arr1 + i) == *(arr2 + j))
      {
              printf("%d ",*(arr1 +i));
              found = 1;
              break;
          }
    }
}
if(! found){
    printf("No common elements\n");
}
int main(){
 int n, m;
 scanf("%d",&n);
 if(n <= 0){
     printf("Invalid Input");
     return 0;
 }
 int arr1[n];
 for(int i = 0; i < n; i++){
     scanf("%d", &arr1[i]);
     scanf("%d", &m);
     if (m <= 0){
         printf("Invalid Input");
         return 0;
     }
      int arr2[n];
 for(int i = 0; i < n; i++)
     scanf("%d", &arr2[i]);
     findCommonElements(arr1, n, arr2, m);
     return 0;