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#include <bits/stdc++.h>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
const int NMAX = 20;
int a[NMAX],n,k;
bool ver[NMAX];
void combinari(int n,int k,int ind){
if(ind==k+1){
for(int i=1;i<=k;i++){
fout << a[i] << ' ';
}
fout << '\n';
return;
}
for(int i=a[ind-1];i<=n;i++){
if(ver[i]==true) continue;
a[ind]=i;
ver[i]=true;
combinari(n,k,ind+1);
ver[i]=false;
}
}
int main()
{
fin >> n >> k;
a[0]=1;
combinari(n,k,1);
return 0;
}