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#include <bits/stdc++.h>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
const int dim=20;
int n,k,sol[dim],fv[dim];
void backtracking(int pas){
for(int i=sol[pas-1]+1;i<=n;i++){
sol[pas]=i;
if(pas==k){
for(int j=1;j<=k;j++){
fout<<sol[j]<<' ';
}
fout<<'\n';
}
else{
backtracking(pas+1);
}
}
}
signed main(){
fin>>n>>k;
backtracking(1);
}