public class test
{
public static void main(String[] args)
{
int i,n,k=0;
for (n = 3; n<=100; n++)
{ i=2;
while (i<n)
{ if (n%i==0) break; i++; }
if (i==n)
{
k++; System.out.print(i+ " ");
if (k %6==0) System.out.println();
}
}
}
}