#include<stdio.h>

using namespace std;

#define MAXN 22

int n, k;
int v[ MAXN ];

FILE *g = fopen("combinari.out", "w");

inline void back(int t)
{
    int i;

    if(t > k)
    {
        for(i = 1; i < k; ++i)
            fprintf(g, "%d ", v[i]);
        fprintf(g, "%d\n", v[k]);
    }
    else
    {
        for(i = v[t-1] + 1; i <= n; ++i)
            v[t] = i, back(t+1);
    }
}

int main()
{
    FILE *f = fopen("combinari.in", "r");

    fscanf(f, "%d %d", &n, &k);

    fclose(f);

    back(1);

    fclose(g);

    return 0;
}