#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>

void print_set(int *a, int len)
{
    int i;

    for (i = 1; i <= len; ++i)
        printf("%d ", a[i]);
    printf("\n");
}

void sets(int *a, int len, int k, int index)
{
    int i;

    if (index == (k + 1))
        print_set(a, k);
    else
    {
        for (i = a[index - 1] + 1; i <= len; ++i)
        {
            a[index] = i;
            sets(a, len, k, index + 1);
        }
    }
}

int main()
{
    int n = -1, k = 0, a[19];

    freopen("combinari.in", "r", stdin);
    freopen("combinari.out", "w", stdout);

    scanf("%d %d", &n, &k);

    memset(a, 0, n * sizeof(int));
    sets(a, n, k, 1);   

    return 0;
}