#include <iostream>
#include <fstream>
#include <stack>

using namespace std;
ifstream in("combinari.in");
ofstream out("combinari.out");

const int NMax = 20;

int N,K;
int v[NMax];

void backT(int);

int main() {
    in>>N>>K;

    backT(1);

    in.close();out.close();
    return 0;
}

void backT(int idx) {
    if (idx == K+1) {
        for (int i=1;i<=K;++i) {
            out<<v[i]<<' ';
        }
        out<<'\n';
        return;
    }

    for (int val=v[idx-1] + 1;val <= N;++val) {
        v[idx] = val;
        backT(idx+1);
    }
}