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#include <algorithm>
#include<bits/stdc++.h>
using namespace std;
ifstream fin("combinari.in");ofstream fout("combinari.out");
void combin(long int ln,int* ar,int n,int k){
if(ln==k){
for(int i=1;i<=k;i++)fout<<ar[i]<<' ';fout<<endl;
}
else {
for(int i=ar[ln]+1;i<=n;i++){
ar[ln+1]=i;combin(ln+1,ar,n,k);
}
}
}
int main(){
int n,k;int ar[n+1];fin>>n>>k;
combin(0,ar,n,k);
}