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