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#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
const int NMax = 18;
int n, k;
int st[NMax + 5];
void Print(){
for (int i = 1; i <= k; i++)
fout << st[i] << ' ';
fout << '\n';
}
void Backtracking(int x){
for (int i = st[x - 1] + 1; i <= n; i++){
st[x] = i;
if (x == k)
Print();
else
Backtracking(x + 1);
}
}
int main(){
fin >> n >> k;
Backtracking(1);
return 0;
}