// Slower C++ solution:
//Tue Dec 22 22:01:34 JST 2009

#include<set>

#include<iostream>

#include<queue>

#include<algorithm>

using namespace std;

#define REP(i,b,n) for(int i=b;i<n;i++)

#define rep(i,n)   REP(i,0,n)

#define mp make_pair

int dx[]={0,1,1,0,-1,-1};

int dy[]={-1,-1,0,1,1,0};

#define CONNECT true

#define UNCONNECT false

#define CANMOVE true

#define CANNOTMOVE false



class state{

public:

  int len;

  int x[8],y[8];

  int cnt;

  int path[8];



  bool is_connected(int me,int you){

    if ( x[me]==x[you]){

      if ( y[me]-1 == y[you] || y[me]+1 == y[you] || y[me]==y[you])return CONNECT;

    }else if ( x[me]+1 == x[you]){

      if (y[me] ==y[you] || y[me]-1==y[you])return CONNECT;

    }else if ( x[me]-1==x[you]){

      if (y[me] ==y[you] || y[me]+1 == y[you])return CONNECT;

    }



    return UNCONNECT;

  }



  bool can_good_pos(int cur){

    rep(i,cur-1){

      if ( is_connected(cur,i)==CONNECT)return false;//©ªÌOÈOÌâÂÆÂÈªÁÄ¢éÌÅ¾ßB

    }

    if (cur==0 ||  is_connected(cur,cur-1)==CONNECT)return true;//©ªÆOÌâÂÆÂÈªÁÄ¢éÌÅ¨

    return false;

  }

  

  void make_next(int now,queue<state>&Q,set<state>&S,bool flag,set<pair<int,int> > & NG){

    if ( now == len){

      if ( S.find((*this))==S.end()){

	cnt++;

	S.insert(*this);

	Q.push(*this);

	cnt--;

      }

      return;

    }



    //don't move

    

    if (can_good_pos(now) ){

      path[now]=-1;

      make_next(now+1,Q,S,CANMOVE,NG);

    }



    if ( flag == CANNOTMOVE)return;//OÌª®¢Ä½ç©ªÍ®¯È¢



    rep(i,6){

      x[now]+=dx[i];

      y[now]+=dy[i];



      path[now]=i;



      if (NG.find(mp(x[now],y[now])) == NG.end() && can_good_pos(now)){

	make_next(now+1,Q,S,CANNOTMOVE,NG);//©ªª®¢½çÌÍ®¯È¢B

      }

      x[now]-=dx[i];

      y[now]-=dy[i];

    }

        

  }

  

  bool operator<(const state & a)const{

    rep(i,len){

      if ( x[i]!=a.x[i])return x[i]<a.x[i];

      if ( y[i]!=a.y[i])return y[i]<a.y[i];

    }

    return false;

  }

  

};







int bfs(state ini,int dx,int dy,set<pair<int,int> > &NG){

  queue<state> Q;

  set<state> S;

  Q.push(ini);

  S.insert(ini);

  while(!Q.empty()){

    state now = Q.front();

    Q.pop();

    if ( (max(now.x[0],dx)-min(now.x[0],dx)+max(now.y[0],dy)-min(now.y[0],dy))/2+now.cnt>20)continue;

    if ( now.x[0]==dx && now.y[0]==dy){

      return now.cnt;

    }

    now.make_next(0,Q,S,CANMOVE,NG);

  }

  return -1;

}





main(){

  int n,m,dx,dy;

  while(cin>>n && n){

    state ini;

    set<pair<int,int> > NG;

    

    ini.len=n;

    ini.cnt=0;

    rep(i,n)cin>>ini.x[i]>>ini.y[i];

    cin>>m;

    rep(i,m){

      int f,s;

      cin>>f>>s;

      NG.insert(mp(f,s));

    }

    cin>>dx>>dy;

    cout << bfs(ini,dx,dy,NG)<<endl;

  }

  return false;

}

// Faster C++ solution for the same problem (measured speedup: 1.1172487026918712x):
#include<set>

#include<iostream>

#include<algorithm>



#include<queue>

using namespace std;

#define REP(i,b,n) for(int i=b;i<n;i++)

#define rep(i,n)   REP(i,0,n)

#define mp make_pair

int dx[]={0,1,1,0,-1,-1};

int dy[]={-1,-1,0,1,1,0};

int gx,gy;

#define CONNECT true

#define UNCONNECT false

#define CANMOVE true

#define CANNOTMOVE false



class state{

public:

  int len;

  int x[8],y[8];

  int cnt;

  int path[8];

  bool is_connected(int me,int you){

    if ( x[me]==x[you]){

      if ( y[me]-1 == y[you] || y[me]+1 == y[you] || y[me]==y[you])return CONNECT;

    }else if ( x[me]+1 == x[you]){

      if (y[me] ==y[you] || y[me]-1==y[you])return CONNECT;

    }else if ( x[me]-1==x[you]){

      if (y[me] ==y[you] || y[me]+1 == y[you])return CONNECT;

    }



    return UNCONNECT;

  }



  bool can_good_pos(int cur){

    rep(i,cur-1){

      if ( is_connected(cur,i)==CONNECT)return false;//

    }

    if (cur==0 ||  is_connected(cur,cur-1)==CONNECT)return true;//

    return false;

  }

  

  void make_next(int now,priority_queue<state,vector<state>,greater<state> >&Q,set<state>&S,bool flag,set<pair<int,int> > & NG){

    if ( now == len){

      if ( S.find((*this))==S.end()){

	cnt++;

	S.insert(*this);

	Q.push(*this);

	cnt--;

      }

      return;

    }



    //don't move

    

    if (can_good_pos(now) ){

      path[now]=-1;

      make_next(now+1,Q,S,CANMOVE,NG);

    }



    if ( flag == CANNOTMOVE)return;//



    rep(i,6){

      x[now]+=dx[i];

      y[now]+=dy[i];



      path[now]=i;



      if (NG.find(mp(x[now],y[now])) == NG.end() && can_good_pos(now)){

	make_next(now+1,Q,S,CANNOTMOVE,NG);//

      }

      x[now]-=dx[i];

      y[now]-=dy[i];

    }

        

  }





  bool operator>(const state & a)const{

    if ( cnt != a.cnt)return cnt > a.cnt;

    

    return max(x[0],gx)-min(x[0],gx)+max(y[0],gy)-min(y[0],gy) >

      max(a.x[0],gx)-min(a.x[0],gx)+max(a.y[0],gy)-min(a.y[0],gy) ;

  }

  

  bool operator<(const state & a)const{



    rep(i,len){

      if ( x[i]!=a.x[i])return x[i]<a.x[i];

      if ( y[i]!=a.y[i])return y[i]<a.y[i];

    }

    return false;

  }

  

};







int bfs(state ini,int dx,int dy,set<pair<int,int> > &NG){

  priority_queue<state,vector<state>,greater<state> > Q;

  set<state> S;

  Q.push(ini);

  S.insert(ini);

  while(!Q.empty()){

    state now = Q.top();

    Q.pop();



    if ( now.x[0]==dx && now.y[0]==dy){

      return now.cnt;

    }

    now.make_next(0,Q,S,CANMOVE,NG);

  }

  return -1;

}





main(){

  int n,m,dx,dy;

  while(cin>>n && n){

    state ini;

    set<pair<int,int> > NG;

    

    ini.len=n;

    ini.cnt=0;

    rep(i,n)cin>>ini.x[i]>>ini.y[i];

    cin>>m;

    rep(i,m){

      int f,s;

      cin>>f>>s;

      NG.insert(mp(f,s));

    }

    cin>>dx>>dy;

    gx=dx;gy=dy;

    cout << bfs(ini,dx,dy,NG)<<endl;

  }

  return false;

}