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#include <fstream>
#define nmax 19
using namespace std;
ifstream fin("combinari.in");
ofstream fout("combinari.out");
int n,m;
int x[nmax];
void Afisare(int k)
{
int i;
for(i=1;i<=k;i++)
fout<<x[i]<<" ";
fout<<"\n";
}
void Back(int k)
{
int i;
for(i=x[k-1]+1;i<=n-m+k;i++)
{
x[k]=i;
if(k==m) Afisare(k);
else Back(k+1);
}
}
int main()
{
fin>>n>>m;
Back(1);
return 0;
}