#include <fstream>
#include <iostream>


using namespace std;

int n,m, viz[21]={0}, ans[21]={0};

void back(int k)
{
    if( k == m ){
        for(int i=1;i<=m;++i){
            out<<ans[i]<<" ";
        }
        out<<endl;
        return;
    }
    
    for(int j=ans[k]+1;j<=n;++j) {
        if( viz[j] == 0 ) {
            viz[j] = 1;
            ans[k+1] = j;
            back(k+1);
            viz[j] = 0;
        }
    }
}

int main()
{
    ifstream in("combinari.in");
    ofstream out("combinari.out");

    in>>n>>m;

    back(0);

    return 0;
}