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#include <bits/stdc++.h>
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int n, k;
bool v[20];
int st[20];
void backtracking(int top)
{
if(top==k+1)
{
for(int i=1; i<=k; i++)
fout << st[i] << " ";
fout << "\n";
}
else
{
for(int i=st[top-1]+1; i<=n-k+top; i++)
{
st[top]=i;
backtracking(top+1);
}
}
}
int main()
{
fin >> n >> k;
backtracking(1);
return 0;
}