#include<stdio.h>   
  
int n,m,p[21];

void back_comb(int k)
{   
if(k==m+1)
  {for(int j=1;j<=m;j++)
       printf("%d ",p[j]);
    printf("\n");
   }
 else for(int i=p[k-1]+1;i<=n;i++)
     {p[k]=i;
      back_comb(k+1);
         }   
}   
int main()   
{   
 freopen("combinari.in","r",stdin);   
 freopen("combinari.out","w",stdout);   
 scanf("%d %d",&n,&m);   
 back_comb(1);
 return 0;   
}