#include <fstream>
#define NMAX 20

using namespace std;

ifstream f("combinari.in");
ofstream g("combinari.out");

int fr[NMAX], n, m, v[NMAX], i, level = 1;
bool ok;

void afisare()
{
    for (i = 1; i <= m; ++ i)
        g << v[i] << " ";
    g << '\n';
}

bool check()
{
    for (i = 1; i <= n; ++ i)
        fr[i] = 0;

    for (i = 1; i <= n; ++ i)
    {
        fr[v[i]] ++;

        if (fr[v[i]] > 1)
            return 0;
    }
    return 1;
}

void backtracking()
{
    while (level)
    {
        ok = 0;

        while (v[level] < n && !ok)
        {
            v[level] ++;
            ok = check;
        }

        if (!ok)
            level --;
        else
            if (ok && level == m)
                afisare();
        else
            if (ok)
                v[++ level] = v[level - 1];
    }
}

int main()
{
    f >> n >> m;
    backtracking();

    return 0;
}