#include <bits/stdc++.h>
#define in "combinari.in"
#define out "combinari.out"
using namespace std;
ifstream fin(in);
ofstream fout(out);

int n,k;
int st[20];

void Afis()
{
    int i;

    for (i = 1; i <= k; i++)
        fout << st[i] << " ";
    fout << "\n";
}

void Back(int top)
{
    if (top == k+1) Afis();
    else for (int i = st[top-1]+1; i <= n-k+top; i++)
    {
        st[top] = i;
        Back(top+1);
    }
}

int main()
{
    fin >> n >> k;
    Back(1);

    fin.close();
    fout.close();
    return 0;
}