#include <bits/stdc++.h>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");

int solutie[20];
int visited[20];
void bkt(int pos,int k,int n,int lastval)
{
    if(pos>k)
    {
        int cnt=0;
        for(int i=1;i<=k;i++)
            fout<<solutie[i]<<" ";
        fout<<"\n";
        return;
    }
    for(int val=lastval+1;val<=n;val++)
    {
        if(visited[val]==1) continue;
        solutie[pos]=val;
        visited[val]=1;
        bkt(pos+1,k,n,val);
        visited[val]=0;
    }
}

int main()
{
    int n,k;
    fin>>n>>k;
    bkt(1,k,n,0);
    return 0;
}