#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(ll i=0;i<n;i++)
#define repl(i,l,r) for(ll i=(l);i<(r);i++)
#define per(i,n) for(ll i=n-1;i>=0;i--)
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
#define CST(x) cout<<fixed<<setprecision(x)
using ll=long long;
using vl=vector<ll>;
using vvl=vector<vector<ll>>;
using pl=pair<ll,ll>;
template<class T> inline bool chmin(T& a, T b){
    if(a>b){a = b;return true;}return false;}
template<class T> inline bool chmax(T& a, T b){
    if(a<b){a=b;return true;}return false;}
const ll MOD=1000000007;
const ll MOD9=998244353;
const int inf=1e9;
const ll INF=4e18;
const ll dy[4]={1,0,-1,0};
const ll dx[4]={0,-1,0,1};
int main(){
    vl info(10,1);
    int N;cin>>N;
    while(N--){
        int a,b,c,d;string S;cin>>a>>b>>c>>d>>S;
        if(S=="YES"){
            rep(i,10)if(i!=a and i!=b and i!=c and i!=d)info[i]=0;
        }
        else{
            info[a]=info[b]=info[c]=info[d]=0;
        }
    }
    rep(i,10)if(info[i])cout<<i<<endl;
    return 0;
}