public class AlmostPrime
{
    public static void main(String args[])
    {
        for (int k = 1; k <= 5; k++) {
            System.out.print("k = " + k + ":");

            for (int i = 2, c = 0; c < 10; i++)
                if (kprime(i, k)) {
                    System.out.print(" " + i);
                    c++;
                }

            System.out.println("");
        }
    }

    public static boolean kprime(int n, int k)
    {
        int f = 0;
    	for (int p = 2; f < k && p*p <= n; p++)
    		while (0 == n % p){
    			n /= p;
    			f++;
            }
    	return f + ((n > 1)?1:0) == k;
    }
}