// Program 48: Common Elements of Two Arrays

import java.util.*;
class CommonArrayElements
{
    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        System.out.print("Size of first array: ");
        int n = sc.nextInt();
        int[] a = new int[n];
        for (int i = 0; i < n; i++)
        {
            a[i] = sc.nextInt();
        }
        System.out.print("Size of second array: ");
        int m = sc.nextInt();
        int[] b = new int[m];
        for (int i = 0; i < m; i++)
        {
            b[i] = sc.nextInt();
        }
        int[] c = new int[n];
        int count = 0;
        for (int i = 0; i < n; i++)
        {
            boolean common = false, repeated = false;
            for (int j = 0; j < m; j++) if (a[i] == b[j])
            {
                common = true;
            }
            for (int k = 0; k < count; k++) if (c[k] == a[i])
            {
                repeated = true;
            }
            if (common && !repeated)
            {
                c[count++] = a[i];
            }
        }
        for (int i = 0; i < count - 1; i++)
        {
            for (int j = 0; j < count - i - 1; j++)
            {
                if (c[j] > c[j + 1])
                {
                    int t = c[j];
                    c[j] = c[j + 1];
                    c[j + 1] = t;
                }
            }
        }
        System.out.println("Common elements:");
        for (int i = 0; i < count; i++)
        {
            System.out.print(c[i] + " ");
        }
        if (count == 0)
        {
            System.out.print("None");
        }
        System.out.println();
    }
}