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#include <bits/stdc++.h>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int a[20];
int n,k;
void backtracking(int lvl,int prec){
if (lvl==k+1){
for (int i=1;i<=k;i++) fout<<a[i]<<" ";
fout<<'\n';
}
else{
for (int i=prec+1;i<=n;i++){
a[lvl]=i;
backtracking(lvl+1,i);
}
}
}
int main(){
fin>>n>>k;
backtracking(1,0);
return 0;
}