#include <stdio.h>
#include <math.h>

int main() {
    int a=3, b, i=0;
    while (i != 25)
    {
        if (((a%2) != 0) && ((a%3) != 0) && ((a%5) != 0) && ((a%7) != 0) &&
        (((a+2)%2) != 0) && (((a+2)%3) != 0) && (((a+2)%5) != 0) && (((a+2)%7) != 0)
        || (a == 3) || (a == 5) || (a == 7) || ((a+2) == 3) || ((a+2) == 5) || ((a+2) == 7))
        {
        printf("%d \t%d\n",a, (a+2));
        i++;
        }
        a++;
    }
    return 0;
}