#include "bits/stdc++.h"
#include <chrono>

using namespace std;
using namespace std::chrono;

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;

#define forn(ii,nn) for (int ii = 0; ii < nn; ++ii)
#define gcd(ade,bde) __gcd(ade,bde)
#define vi vector<int>
#define vll vector<ll>
#define vs vector<string>
#define vc vector<char>
#define pb(ade) push_back(ade)
#define pp pop_back()
#define IOS ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define type(ade) typeid(ade).name();
#define starting() auto start = high_resolution_clock::now()
#define ending() auto stop = high_resolution_clock::now();\
auto duration = duration_cast<microseconds>(stop - start);\
cerr << "\n" << "\n" << "Execution Time : "<< duration.count()/1000 << " ms" << "\n"

template <typename T1>
void print(vector<T1> arr) {
	int l = (int)arr.size();
	cerr << "[" ;
	for(int i = 0; i < l; i++) {
		(i == l - 1) ? cerr << arr[i] : cerr << arr[i] << "," ;
	}
	cerr << "]" << "\n";
}

template <typename T1>
void printArr(int arr[], int l) {
	cerr << "[" ;
	for (int i = 0; i < (int)l; i++) {
		(i == l-1) ? cerr << arr[i] : cerr << arr[i] << "," ;
	}
	cerr << "]" << "\n";
}

template <typename T1>
void console(vector<vector<T1>> arr) {
	for (int i = 0; i < (int)arr.size(); ++i) {
		cerr << "\n" << " [" ;
	    for(int j = 0; j < (int)arr[i].size(); ++j) {
			(j == (int)arr[i].size() - 1) ? cerr << arr[i][j] : cerr << arr[i][j] << "," ;
		}
	    cerr << "]";
	}
	cerr << "\n";
}
template <typename T1,typename T2>
void mapped(map<T1,T2> m) {
	for(auto ite = m.begin(); ite != m.end(); ++ite){
		cerr << "'" << ite->first << "'"<< " : " << ite->second << "\n";
	}
}

template <typename T1 , typename T2>
void mappedArr(map<T1,vector<T2>> m) {
	for (auto ity = m.begin(); ity != m.end(); ++ity) {
		cerr << "'" << ity->first << "'" << " : " << "[";
        for (int i = 0; i < (int)ity->second.size(); ++i) {
			(i == (int)ity->second.size() - 1) ? cerr << ity->second[i] : cerr << ity->second[i] << ",";
		}
		cerr << "]"<< "\n";
	}
}

string int_to_string(int x) {
    stringstream ss;
	ss << x;
	string ni = ss.str();
	return ni;
}
int char_to_int(char c) {
	int n = (int)c - 48;
	return n;
}
int string_to_int(string x) {
	int n;
	stringstream s(x);
	s >> n;
	return n;
}

template <typename T1, typename T2>
void vectPair(vector<pair<T1,T2>> vp) {
	for (int arrp = 0; arrp< (int)vp.size(); ++arrp){
		cerr << "(" << vp[arrp].first << "," << vp[arrp].second << ")" << "\n" ;
	}
}

//unordered_map<int,int> um;
//unordered_set<int> us;
//set<int> s;
// v.front() gives the first element of vector
// v.back()  gives the last element of vector
// insert erase substr
//g++ -o Legendary-Grandmaster Legendary-Grandmaster.cpp&Legendary-Grandmaster.exe
//cd C:\Users\158si\Desktop\Algorithim\codeForces\elite
// for-bash cd C:/Users/158si/Desktop/Algorithim/codeForces/elite
//memset(arr,element,sizeofarray);//Converts the value ch to unsigned char and copies it
// into each of the first n characters of the object pointed to by str[].
//g++ -o impulse.exe impulse.cpp
//puts

typedef long long ll;

ll power (ll a, ll n) {
	ll ans = 1;
	for (ll i = 0; pow(2,i) <= n; ++i) {
		if ((n >> i) & 1) {
			ans *= a;
		}
		a = a * a;
	}
	return ans;
}
const int MOD = 1e9 + 7;

void inverse(vector<ll>& v, ll w, ll p) {
	v[1] = 1;
	for (ll i = 2; i < w; ++i) {
		v[i] = (p - (p/i) * v[p % i] % p) % p;
	}
}
const ll INF = 1e18L + 5;



/**************************/

bool solve(int value);

int n, a, b, c;
vector<string> s(1e5 + 7);
string ans = "";
map<char,int> m;

int main() {
	IOS;
	#ifndef ONLINE_JUDGE
	freopen("input.txt", "r", stdin);
	freopen("output.txt", "w", stdout);
	#endif
	cin >> n;
	cin >> a >> b >> c;
	for (int i = 0; i < n; ++i) {
		cin >> s[i];
	}
	m['A'] = a;
	m['B'] = b;
	m['C'] = c;
	if(solve(0)) {
		cout << "Yes\n";
		for (int i = 0; i < n; ++i) {
			cout << ans[i] << "\n";
		}
	}else {
		cout << "No\n";
	}
}

bool solve(int index) {
	if (index == n) {
		if (m['A'] < 0 || m['B'] < 0 || m['C'] < 0) {
			return false;
		} 
		return true;
	}
	if (m[s[index][0]] < 0 || m[s[index][1]] < 0) {
		//ans = "";
		return false;
	}
	if (m[s[index][0]] < 1 && m[s[index][1]] < 1) {
	   //ans = "";
		return false;
	}
	if (m[s[index][1]] > 0) {
		ans += s[index][0];
		m[s[index][0]]++;
		m[s[index][1]]--;
		bool x = solve(index + 1);
		if (x) {
			return true;
		}
		ans.pop_back();
		m[s[index][0]]--;
		m[s[index][1]]++;
	}
	if (m[s[index][0]] > 0) {
		m[s[index][0]]--;
		m[s[index][1]]++;
		ans += s[index][1];
		bool y = solve(index + 1);
		if (y) {
			return true;
		}
	}
	return false;
}

// 7 10 2






















Measured memory_bytes: 16056