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#include <fstream>
using namespace std;
ifstream cin ("combinari.in");
ofstream cout ("combinari.out");
int v[20];
void afis(int k){
int i;
for(i=1; i<=k; i++)
cout << v[i] << ' ';
cout << '\n';
}
void backt(int k, int n, int p){
int i;
for (i=v[k-1]+1; i<=n; i++){
v[k]=i;
if (k==p)
afis(k);
else
backt(k+1, n, p);
}
}
int main()
{
int n,p;
cin >> n >> p;
backt(1, n, p);
return 0;
}