#include <bits/stdc++.h>
using namespace std;

int n, m;
int v[29];
inline void back(int k, int j){
    if(k == m){
        for(int i = 0; i < m ; ++i)
            printf("%d ", v[i]);
        printf("\n");
        return ;
    }
    for(int i = j + 1; i <= n ; ++i){
        v[k] = i;
        back(k + 1, i);
    }

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