#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using ull=unsigned long long;
#define rep(i,n) for(int i=0; i<(n); i++)

vector<string> Colors = {
  "Red","Orange","Yellow","Green","Cyan","Blue","Violet"
};

int C[7]={};
int C2[7]={};

int main(){
  int N; cin>>N;
  rep(i,N){
    string s; cin>>s;
    rep(t,7) if(Colors[t]==s) C[t]++;
  }
  rep(i,N-1){
    string s; cin>>s;
    rep(t,7) if(Colors[t]==s) C2[t]++;
  }
  rep(t,7){
    if(C[t]>C2[t]) cout<<Colors[t]<<"\n";
  }
  return 0;
}