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#include <iostream>
#include <fstream>
using namespace std;
int n,m,a[20];
ifstream fin("combinari.in.txt");
ofstream fout("combinari1.out.txt");
void f1(){
for(int i=1;i<n;i++){
fout<<a[i]<<" ";
}
fout<<endl;
}
void f2(int k){
if(k<=m){
for(int i=a[k-1]+1;i<=n-m+k;i++){
a[k]=i;
f2(k+1);
}
}
else f1();
}
int main()
{
fin>>n>>m;
f2(1);
return 0;
}