#include<stdio.h>

long s[21],n,c,k;

void back(long int c)
{long int i,j;
 int ok;
 if(c==k)
    {for(i=1;i<=c;i++)
	printf("%ld ",s[i]);
     printf("\n");

     }
    else
      {for(i=1;i<=n;i++)
	     {ok=1;
	      for(j=1;j<=c;j++)
		  if(s[j]==i)
		     {ok=0;
		      break;
		      }
	      if(ok)
		{s[c+1]=i;
		 back(c+1);
		 }
	      }
	}

}

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