#include<fstream>
using namespace std;
ifstream F("combinari.in");
ofstream G("combinari.out");
int n,k,c[19];
void A(int l)
{
    int i;
    if(l==k+1) {
        for(i=1;i<=k;G<<c[i++]<<' ');
        G<<'\n';
    } else
        for(i=c[l-1]+1;i<=n-k+l;c[l]=i,A(l+1),++i);
}
int main()
{
    return F>>n>>k,A(1),0;
}