#include <bits/stdc++.h>
using namespace std;

ifstream fin("combinari.in");
ofstream fout("combinari.out");

/**

*/

int n, st[20], k;
bitset<20> ap;

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

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

int main()
{
    int i, j;
    fin >> n >> k;
    Back(1);
    return 0;
}