#include<stdio.h>
int main()
{
    int a, b;
    for (a = 2; a <= 10; a++)
    {
        for (b = 2; b <= a; b++)
        {
            if (a%b == 0)
                continue;
            else
                printf("%d\t", a);
        }
        }
    return 0;
}