#include <stdio.h>

int v[20], used[20];

int comb (int index, int n, int k) {
    int i;
    if (index == k) {
        for (i = 0; i < k; ++i) {
            printf ("%d ", v[i]);
        }
        printf ("\n");
    } else {
        for (i = 1; i <= n; ++i) {
            if (used[i] == 0) {
                if (index == 0) {
                    v[index] = i;
                    used[i] = 1;
                    comb (index + 1, n, k);
                    used[i] = 0;
                } else if (i > v[index-1]) {
                    v[index] = i;
                    used[i] = 1;
                    comb (index + 1, n, k);
                    used[i] = 0;
                }
            }
        }
    }
}

int main() {
    freopen ("combinari.in", "r", stdin);
    freopen ("combinari.out", "w", stdout);
    int n, k;

    scanf ("%d%d", &n, &k);
    comb (0, n, k);

    return 0;
}