#include <iostream>
#include <fstream>

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

short N,K;
short v[20];

void backT(short);

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

    backT(1);

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

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

    short lim = N - (K - idx);
    for (short k = v[idx-1] + 1;k <= lim; ++k) {
        v[idx] = k;
        backT(idx + 1);
    }
}