/**
 * code generated by JHelper
 * More info: https://github.com/AlexeyDmitriev/JHelper
 * @author champon
 */

#include <iostream>
#include <fstream>
//<editor-fold desc="definitions">
#include <bits/stdc++.h>
#define se cout << "test ok" << endl;
#define sp << " " <<
#define enl "\n"
using namespace std;
using ll=long long;
using ld=long double;
using vi = vector<int>;
using vii = vector<vector<int>>;
using vl = vector<ll>;
using vll = vector<vector<ll>>;
using vlll = vector<vector<vector<ll>>>;
using vc = vector<char>;
using vcc = vector<vector<char>>;
using pi = pair<int, int>;
using pl = pair<ll, ll>;
ll mod = ll(1e9)+7;
ll inf = ll(1e18);
void bl(bool b, ostream& out=cout){ out << (b ? "Yes" : "No") << endl; }
void bl2(bool b, ostream& out=cout){ out << (b ? "YES" : "NO") << endl; }
template<typename T> inline bool chmax(T &a, T b){ if(a<b){a=b; return true;} return false; }
template<typename T> inline bool chmin(T &a, T b){ if(a>b){a=b; return true;} return false; }
int dx[] = {1, 0, -1, 0, 1, -1, 1, -1};
int dy[] = {0, 1, 0, -1, 1, -1, -1, 1};

#ifndef INCLUDE_DEBUG_HPP
#define INCLUDE_DEBUG_HPP

#include <iostream>
#include <vector>
#include <map>
using namespace std;

namespace dbg {
    using ll = long long;

    class Debug {
    public:
        Debug(){}
        template<typename T>
        void vd(vector<T> vec);
        template<typename T>
        void vd2(vector<vector<T>> vec);
        template<typename T>
        void ad(T *arr, ll n);
        template<typename T, size_t N>
        void ad2(T (&arr)[N], ll n);
        template<typename T>
        void md(T mp);
    };

    template<typename T>
    void Debug::vd(vector<T> vec) {
        for (auto vv : vec) cout << vv << " ";
        cout << endl;
    }

    template<typename T>
    void Debug::vd2(vector<vector<T>> vec) {
        for (auto vv : vec) {
            for (auto vvv : vv) cout << vvv << " ";
            cout << endl;
        }
    }

    template<typename T>
    void Debug::ad(T *arr, ll n) {
        for (int i = 0; i <= n; i++) cout << arr[i] << " ";
        cout << endl;
    }

    template<typename T, size_t N>
    void Debug::ad2(T (&arr)[N], ll n) {
        for (int i = 0; i <= N; i++) for (int j = 0; j <= n; j++) cout << arr[i][j] << " ";
        cout << endl;
    }

    template<typename T>
    void Debug::md(T mp) {
        cout << "key : value" << endl;
        for (auto const &m : mp) cout << m.first << " : " << m.second << endl;
        cout << endl;
    }

}

#endif //INCLUDE_DEBUG_HPP

dbg::Debug debug;
//</editor-fold>

class FThreeVariablesGame {
public:
	void solve(std::istream& in, std::ostream& out) {
        ll n, a, b, c;
        in >> n >> a >> b >> c;
        vector<string> s(n);
        for(int i=0; i<n; i++) in >> s[i];

        bool judge = true;
        vector<char> res(n);
        for(int i=0; i<n; i++){
            if(s[i] == "AB"){
                if(a == 0 && b == 0) {
                    judge = false;
                }
                else if(a == 0) {
                    ++a; --b;
                    res[i] = 'A';
                }else if(b == 0){
                    --a; ++b;
                    res[i] = 'B';
                }else{
                    if(i != n-1){
                        if(c == 0 && a == 1 && s[i+1] == "AC") {
                            ++a; --b;
                            res[i] = 'A';
                        }else if(c == 0 && b == 1 && s[i+1] == "BC"){
                            --a; ++b;
                            res[i] = 'B';
                        }else{
                            ++a; --b;
                            res[i] = 'A';
                        }
                    }else{
                        ++a; --b;
                        res[i] = 'A';
                    }
                }
            }
            if(s[i] == "AC"){
                if(a == 0 && c == 0) {
                    judge = false;
                }
                else if(a == 0){
                    ++a; --c;
                    res[i] = 'A';
                }else if(c == 0){
                    --a; ++c;
                    res[i] = 'C';
                }else{
                    if(i != n-1){
                        if(b == 0 && a == 1 && s[i+1] == "AB") {
                            ++a; --c;
                            res[i] = 'A';
                        }else if(b == 0 && c == 1 && s[i+1] == "BC"){
                            --a; ++c;
                            res[i] = 'C';
                        }else{
                            ++a; --c;
                            res[i] = 'A';
                        }
                    }else{
                        ++a; --c;
                        res[i] = 'A';
                    }
                }
            }
            if(s[i] == "BC"){
                if(b == 0 && c == 0) {
                    judge = false;
                }
                else if(b == 0){
                    ++b; --c;
                    res[i] = 'B';
                }else if(c == 0){
                    --b; ++c;
                    res[i] = 'C';
                }else{
                    if(i != n-1){
                        if(a == 0 && b == 1 && s[i+1] == "AB") {
                            ++b; --c;
                            res[i] = 'B';
                        }else if(a == 0 && c == 1 && s[i+1] == "AC"){
                            --b; ++c;
                            res[i] = 'C';
                        }else{
                            ++b; --c;
                            res[i] = 'B';
                        }
                    }else{
                        ++b; --c;
                        res[i] = 'B';
                    }
                }
            }
        }

        bl(judge, out);
        if(judge) {
            for (int i = 0; i < n; i++) {
                out << res[i] << enl;
            }
        }
	}
};


int main() {
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);
	FThreeVariablesGame solver;
	std::istream& in(std::cin);
	std::ostream& out(std::cout);
	solver.solve(in, out);
	return 0;
}


Measured memory_bytes: 6664