#include <stdio.h>
int n,l,v[100];
void back(int k)
{
     int i,j;
     if (k>l)
      {     
        for(j=1;j<=l;j++)
                         printf("%d ",v[j]);
        printf("\n");
        }
        else
        for(i=v[k-1]+1;i<=n;i++)
        {
                         v[k]=i;
                         back(k+1);
                         }
}
int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d %d",&n,&l);
    back(1);
    return 0;
}