#include <iostream>
#include <vector>

bool nextCombination(std::vector<int> &a, int n, int m) {
    int k = m;
    for (int i = k - 1; i >= 0; --i)
        if (a[i] < n - k + i + 1) {
            ++a[i];
            for (int j = i + 1; j < k; ++j)
                a[j] = a[j - 1] + 1;
            return true;
        }
    return false;
}

void printCombs(std::vector<int> &a, int n) {
    using namespace std;
    for (int i = 0; i < n; i++)
        cout << a[i] << " ";
    cout << '\n';
}

int main() {
    using namespace std;
    int n, k;
    cin >> n >> k;
    vector<int> a(n);
    for (int i = 0; i < n; i++)
        a[i] = i + 1;

    printCombs(a, k);
    if (n >= k) {
        while (nextCombination(a, n, k))
            printCombs(a, k);
    }
    return 0;
}