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#include<bits/stdc++.h>
using namespace std;
int N,K, a[30];
ifstream fin("combinari.in");
ofstream fout("combinari.out");
void back(int poz, int k)
{
if(k > K)
{
for (int i = 1; i <= K; i++)
{
fout << a[i] << " ";
}
fout << "\n";
return;
}
for(int i = poz ; i <= N - K + k; i++)
{
a[k] = i;
back(i+1, k+1);
}
}
int main()
{
fin >> N >> K;
back (1,1);
}