#include <cstdio>

#define NMAX 27

using namespace std;

int v[NMAX], Ap[NMAX];
int n, m;

void back(int k){
    if(k == m + 1){
        for(int i = 1; i <= m; ++i)
            printf("%d ", v[i]);
        printf("\n");
    }
    else
    for(int i = v[k - 1] + 1; i <= n; ++i){
        v[k] = i;
        if(k <= n && Ap[i] == 0){
            Ap[i] = 1;
            back(k + 1);
            Ap[i] = 0;
        }
    }
}

int main(){
    freopen("combinari.in", "r", stdin);
    freopen("combinari.out", "w", stdout);
    scanf("%d %d", &n, &m);
    back(1);
    return 0;
}