#include<algorithm>
#include<cassert>
#include<cstring>
#include<iostream>
#include<random>
#include<set>
#include<vector>
using namespace std;
typedef long long lint;
typedef vector<int>vi;
typedef pair<int,int>pii;
#define rep(i,n)for(int i=0;i<(int)(n);++i)

const int THRESH2=20;
const int THRESH=10000;

const int M=110000;
int idx[M],occ[M];

vi solve(int n,int m,vi a){
  vi ans;
  int opt=0;
  int time2=THRESH2;
  while(time2>0&&opt<0xfffff){
    memset(idx,0,sizeof(idx));
    memset(occ,0,sizeof(occ));
    int x=0;
    rep(i,m){
      x^=a[i];
      idx[i]=i;
      occ[i]=true;
    }
    int time=THRESH;
    int pos=0;
    while(time>0&&x<0xfffff){
      //cerr<<"time="<<time<<" x="<<x<<endl;
      pii ma(-1,-1);
      rep(i,n){
	if(!occ[i]){
	  int diff=a[i]^a[idx[pos]];
	  ma=max(ma,pii(diff^x,i));
	}
      }
      if(x>ma.first){
	pos=(pos+1)%m;
	time--;
	continue;
      }
      int ind=ma.second;
      occ[idx[pos]]=0;
      occ[ind]=1;
      x^=a[ind]^a[idx[pos]];
      idx[pos]=ind;
      pos=(pos+1)%m;
      time--;
    }
    opt=max(opt,x);
    time2--;
  }
  int val=0;
  rep(i,m){
    ans.push_back(a[idx[i]]);
    val^=a[idx[i]];
  }
  return ans;
}

#if 0
int main(void) {
  int n=100000;
  rep(seed,1000){
    if(seed%10==0)cerr<<seed<<endl;
    mt19937 mt(seed);
    vi a(n);
    set<int> occ;
    rep(i,n){
      int v;
      do{
	v=mt()%1000000+1;
      }while(occ.count(v));
      a[i]=v;
      occ.insert(v);
    }
    int m=mt()%n+1;
    vi ans=solve(n,m,a);
    int sc=0;
    rep(i,m)sc^=ans[i];
    if(sc!=0xfffff){
      cout<<"seed="<<seed<<endl;
      cout<<"m="<<m<<endl;
      cout<<"score="<<sc<<" (hex:"<<hex<<sc<<")"<<dec<<endl;
    }
  }
}
#else
int main(){
  int n,m;
  cin>>n>>m;
  vi a(n);
  rep(i,n)cin>>a[i];
  vi ans=solve(n,m,a);
  rep(i,m){
    cout<<ans[i]<<(i==m-1?"\n":" ");
  }
}
#endif