#include<cstdio>

int w[21],n,k;

void back(int lungime)
{
    if (lungime==k)
    {
        for (int i=1; i<=k; i++)
            printf("%d ",w[i]);
        printf("\n");
    }
    else
    {
        for (int i=w[lungime]+1; i<=n; i++)
        {
            w[lungime+1]=i;
            back(lungime+1);
        }
    }
}

int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d%d", &n, &k);
    back(0);
    fclose(stdin);
    fclose(stdout);
    return 0;
}