#include <stdio.h>


int main () {
    
    int n, m, i, j, k = 0, is_seen = 0, x, common[1000];
    int seen[1000] = {0};
    scanf("%d", &n);
    if (n <= 0) {
        printf("Invalid Input");
        return 0;
    }
    
    int arr1[n];
    for (i = 0; i < n; i++) {
        scanf("%d", &arr1[i]);
    }
    
    scanf("%d", &m);
    if (m <= 0) {
        printf("Invalid Input");
        return 0;
    }
    
    int arr2[m];
    for (i = 0; i < m; i++) {
        scanf("%d", &arr2[i]);
    }
    
    for(i = 0; i < n; i++) {
        for(j = 0; j < m; j++) {
            if (arr1[i] == arr2[j]){
                for (x = 0; x < k; x++){
                    if (common[x] == arr1[i]) {
                        is_seen = 0;
                    }
                }
                if (!is_seen) {
                    common[k++] = arr[i];
                }
                break;
            }
        }
        
    }
    if (k == 0) {
        printf("No common elements");
        return 0;
    }
    
    for (i = 0; i < k; i++){
       if (seen[i] != 0){
            printf("%d ", seen[i]);
        }
    }
    return 0;
}