#include<stdio.h>   
FILE*f=fopen("combinari.in","r");   
FILE*g=fopen("combinari.out","w");   
int st[20];   
int n,k;     
 
void back(int p)   
 {   
  if (p-1==k) 
   {
   int j;   
    for(j=1;j<=k;++j)
        fprintf(g,"%d ",st[i]);   
     fprintf(g,"\n");     
     return ;
   }
   for(int i=st[p-1]+1;i<=n;++i)   
    {   
    st[p]=i;   
    back(p+1);   
    }   
 }   
int main()   
 {   
 fscanf(f,"%d %d",&n,&k);   
 back(1);   
 return 0;   
 }
}