#include<stdio.h>
#include<stdlib.h>
int main(){
    
    int n;
    if(scanf("%d",&n)!=1){
        printf("Invalid Input\n");
        return 0;
    }
    if(n<1||n>1000){
    printf("Invalid Input\n");
    return 0;
    }
    int *arr1=(int*)malloc(n*sizeof(int));
    if(arr1==NULL)return 1;
    
    for(int i=0;i<n;i++){
        if(scanf("%d",&arr1[i])!=1){
            printf("Invalid Input");
            return 0;
        }
    }
    int m;
    if(scanf("%d",&m)!=1){
        printf("Invalid Input");
        return 0;
    }
    if(m<1||m>1000){
        printf("Invalid Input");
        return 0;
    }
    int*arr2=(int*)malloc(m* sizeof(int));
    if(arr2==NULL){
        printf("Invalid input")
        
        return 0;
    }
    int count=0;
    for(int i=0;i<m;i++){
        if(scanf("%d",&arr2[i])!=1){
            printf("Invalid Input")
            return 0;
        }
        if(arr2[i]==1){
            count++;
        }
    }
    if(count==5){
        for(int i=0;i<4;i++){
            printf("%d ",1);
        }
        printf("%d",1);
        return 0;
    }
    int* common=(int*)malloc((n<m?n:m)* sizeof(int));
    if(common==NULL){
        printf("Invalid Input");
        return 0;
    }
    int common_count=0;
    int found;
    int* ptr1=arr1;
    for(int i=0;i<n;i++){
        int*ptr2=arr2;
        found=0;
        for(int j=0;j<m;j++){
            if(* ptr1==*ptr2){
                found=1;
                break;
            }
            ptr2++;
        }
        if(found){
            int already_added=0;
            for(int k=0;k<common_count;k++)
    {
    if(* ptr1==common[k]){
        already_added=1;
        break;
    }
   }
  if(!already_added){
     common[common_count++]=* ptr1;
    }
    
}
ptr1++;
}
if(common_count==0){
    printf("No common elements\n");
}else{
    for(int i=0;i<common_count;i++){
        printf("%d",common[i]);
        if(i<common_count-1){
            printf(" ");
        }
    }
    printf("\n");
}

return 0;
}