#include <cstdio>
int N,K,x[32];
void back(int nivel){
     int i;
     if (nivel==K+1)
     {
      for (i=1;i<=K;++i) printf("%d ",x[i]);
      printf("\n");
     }
     else
      for (i=x[nivel-1]+1;i<=N;++i)
      {
          x[nivel]=i;
          back(nivel+1);
      }
     }
int main(){
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d %d",&N,&K);
    back(1);
    return 0;
}