#include<stdio.h>

int v[20];

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

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