#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int INF = 1e9;
const ll LINF = 1e18;
inline ll gcd(ll a, ll b) { return b ? gcd(b, a%b) : a; }
inline ll lcm(ll a, ll b) { return a / gcd(a, b)*b; }
template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; }
template<class T> ostream& operator << (ostream& out,const vector<T>& V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; }
template<class T> ostream& operator << (ostream& out,const vector<vector<T> >& Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; }
template<class S,class T> ostream& operator << (ostream& out,const map<S,T>& mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; }
template<typename T>vector<T> make_v(size_t a){return vector<T>(a);}
template<typename T,typename... Ts>auto make_v(size_t a,Ts... ts){return vector<decltype(make_v<T>(ts...))>(a,make_v<T>(ts...));}
template<typename T,typename V> typename enable_if<is_class<T>::value==0>::type fill_v(T &t,const V &v){t=v;}
template<typename T,typename V> typename enable_if<is_class<T>::value!=0>::type fill_v(T &t,const V &v){for(auto &e:t) fill_v(e,v);}
/*
 <url:>
 問題文============================================================
 =================================================================
 解説=============================================================
 ================================================================
 */

template<class Type>
Type solve(Type res = Type()){
    int N; cin >> N;
    vector<ll> V(3); cin >> V[0] >> V[1] >> V[2];
    
    vector<string> s(N);
    for(auto& in:s) cin >> in;
    
    for(int i = 0; i < N;i++){
        s[i][0] -= 'A';
        s[i][1] -= 'A';
    }
    
    {
        bool ok = true;
        vector<char> ans;
        auto TV = V;
        
        auto update = [&](int l,int r){
            ans.emplace_back('A'+l);
            TV[l]++; TV[r]--;
        };
        
        for(int i = 0; i < N;i++){
            for(int j = 0; j < 3;j++){
                if(TV[j] < 0){
                    ok = false;
                }
            }
            if(!ok) break;
            
            int l = s[i][0],r = s[i][1];
            if(TV[l] == 0){
                update(l,r);
            }else if(TV[r] == 0){
                update(r,l);
            }else if(i != N-1){
                int nl = s[i+1][0];
                int nr = s[i+1][1];
                
                if(l == nl || l == nr){
                    update(l,r);
                }else{
                    update(r,l);
                }
            }else{
                update(l,r);
            }
        }
        for(int j = 0; j < 3;j++){
            if(TV[j] < 0){
                ok = false;
            }
        }
        if(ok){
            cout << "Yes" << endl;
            for(auto a:ans) cout << a << endl;
            return res;
        }
    }
    cout << "No" << endl;
    return res;
}
int main(void) {
    cin.tie(0); ios_base::sync_with_stdio(false);
    solve(0);
    // cout << fixed << setprecision(15) << solve<ll>() << endl;
    return 0;
}


Measured memory_bytes: 6684