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#include <iostream>
#include <fstream>
#define NMAX 18
using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");
int n,m;
int sir[NMAX+5];
void bkt(int k){
if(k==m){
for(int i=1;i<=m;i++){
g<<sir[i]<<' ';
}
g<<'\n';
}else{
for(int i=sir[k]+1;i<=n-(m-k-1);i++){
sir[k+1]=i;
bkt(k+1);
}
}
}
int main(){
f>>n>>m;
for(int i=1;i<=n-m+1;i++){
sir[1]=i;
bkt(1);
}
f.close();
g.close();
}