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#include <fstream>
using namespace std;
int n,l,v1[20];
ifstream in("combinari.in");
ofstream out("combinari.out");
void comb(int k,int st,int v[])
{
if(k>=20)
return;
if(k==l)
{
for(int j=0;j<l;j++)
out << v[j] << " ";
out << '\n';
}
for(int i=st;i<=n;i++)
{
v[k]=i;
if(k<l)
{
comb(k+1,i+1,v);
}
}
}
int main()
{
in >> n >> l;
comb(0,1,v1);
return 0;
}