#include<stdio.h>
#define maxn 20
using namespace std;

int n,m;
int x[maxn];

void afis()
{
    for(int i=1;i<=m;i++) printf("%d ",x[i]);
    printf("\n");
}

void back(int k)
{
    int i;
    if(k>m) afis();
    else
     for(i=x[k-1]+1;i<=n;i++)
     {
         x[k]=i;
         back(k+1);
     }
}

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

    scanf("%d%d",&n,&m);
    back(1);

    fclose(stdin);
    fclose(stdout);
    return 0;
}