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#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int n,m,x[25];
void afisare(){
for(int i=1;i<=m;i++) fout << x[i] << " ";
fout << "\n";
}
void comb(int k){
int i;
if(k==m+1) afisare();
else for(i=x[k-1]+1;i<=n-m+k;++i) {
x[k]=i;comb(k+1);
}
}
int main(){
fin >> n >> m;
comb(1);
return 0;
}