// May this submission get accepted
#include <bits/stdc++.h>

// エイリアス
using  ll = long signed long;
using ull = long unsigned long;
using  ld = long double;
using namespace std;

// AtCoder/Codeforces 用 デバッグ検知
#ifdef ONLINE_JUDGE
constexpr bool DEBUG_MODE = false;
#else
constexpr bool DEBUG_MODE = true;
#endif

// エイリアス (補完・コンパイルが重くなる)
// #include <boost/multiprecision/cpp_int.hpp>
// using mll = boost::multiprecision::cpp_int;

// 汎用マクロ
#define ALL_OF(x) (x).begin(), (x).end()
#define REP(i,n) for (long long i=0, i##_len=(n); i<i##_len; i++)
#define RANGE(i,is,ie) for (long long i=(is), i##_end=(ie); i<=i##_end; i++)
#define DSRNG(i,is,ie) for (long long i=(is), i##_end=(ie); i>=i##_end; i--)
#define STEP(i, is, ie, step) for (long long i=(is), i##_end=(ie), i##_step = (step); i<=i##_end; i+=i##_step)
#define UNIQUE(v) do { sort((v).begin(), (v).end()); (v).erase(unique((v).begin(), (v).end()), (v).end()); } while (false)
#define FOREACH(i,q) for (auto &i : q)
template<class T> bool chmax(T &a, const T b) { if (a < b) {a = b; return true;} return false; }
template<class T> bool chmin(T &a, const T b) { if (a > b) {a = b; return true;} return false; }
constexpr int INF = numeric_limits<int>::max();
constexpr long long LINF = numeric_limits<long long>::max();
constexpr long double EPS = 1e-10L;
#define Yes(q) ((q) ? "Yes" : "No")
#define YES(q) ((q) ? "YES" : "NO")
#define Possible(q) ((q) ? "Possible" : "Impossible")
#define POSSIBLE(q) ((q) ? "POSSIBLE" : "IMPOSSIBLE")
#define IIF(q,t,f) ((q) ? (t) : (f))
#define DUMP(q) DUMP_FUNC(q, #q, __FILE__, __LINE__)
template <typename T> void DUMP_PROC(T x) { if (is_integral<T>() || is_floating_point<T>()) cerr << "\e[32m" << x << "\e[m"; else cerr << x; }
template<> void DUMP_PROC<char>(char x) { cerr << "\e[36m\'" << x << "\'\e[m"; }
template<> void DUMP_PROC<string>(string x) { cerr << "\e[33m\"" << x << "\"\e[m"; }
template <typename T, typename U> void DUMP_PROC(pair<T, U> x) { cerr << "{"; DUMP_PROC(x.first); cerr << ", "; DUMP_PROC(x.second); cerr << "}"; }
template <typename ...T, typename U, U... Seq> void DUMP_PROC(tuple<T...> &x, integer_sequence<U, Seq...>) { (void)(int[]){(cerr << ((const char*[]){"", ", "})[!!Seq] << (DUMP_PROC(get<Seq>(x)), ""), 0)...}; }
template <typename ...T> void DUMP_PROC(tuple<T...> x) {cerr << "{"; DUMP_PROC(x, index_sequence_for<T...>()); cerr << "}";}
template <typename T> void DUMP_PROC(vector<T> x) { cerr << "["; for (auto &xi : x) { DUMP_PROC(xi); cerr << (&xi != &*x.rbegin()?", ":""); } cerr << "]"; }
template <typename T> void DUMP_FUNC(T x, const char* name, const char* fn, int ln) { cerr << "\e[32m[DEBUG]\e[m " << name << ": "; DUMP_PROC(x); cerr << " @ " << fn << "(" << ln << ")" << endl; }

// gcc拡張マクロ
#define popcount __builtin_popcount
#define popcountll __builtin_popcountll

// 標準入出力
struct qin { // query input
    size_t sz;
    qin(size_t _sz = 1) : sz(_sz) {}
    template <typename T> operator T () const { T a; cin >> a; return a; }
    template <typename T> operator vector<T> () const { vector<T> a(sz); for (size_t i = 0; i < sz; i++) cin >> a[i]; return a; }
    template <typename T, typename U> operator pair<T, U> () const { T f; U s; cin >> f >> s; return pair<T, U>(f, s); }
};
qin in1; // input one
template <typename T> void say(const T x, const char* end = "\n") { cout << x << end; }
void say(const ld x, const char* end = "\n") { cout << setprecision(30) << x << end; }
template <typename T> void say(const vector<T> x, const char* sep = " ", const char* end = "\n") { REP(i, x.size()) { cout << x[i] << (i+1 == i_len ? end : sep); } }
template <typename T> void say(const vector<vector<T>> x, const char* sep = " ", const char* end = "\n") { REP(i, x.size()) { say(x[i], sep, end); } }

// モジュール
// [[LIBRARY]]

// 処理内容
int main() {
    
    ios::sync_with_stdio(false); // stdioを使うときはコメントアウトすること
    cin.tie(nullptr);            // インタラクティブ問題ではコメントアウトすること
    
    ll n, a, b, c; cin >> n >> a >> b >> c;
    vector<string> s = qin(n);

    ll amax = 3;
    chmin(a, amax);
    chmin(b, amax);
    chmin(c, amax);

    vector dp(n+1, vector(amax+1, vector(amax+1, vector(amax+1, false))));
    vector de(n+1, vector(amax+1, vector(amax+1, vector(amax+1, make_tuple(-1LL, -1LL, -1LL)))));
    vector dq(n+1, vector(amax+1, vector(amax+1, vector(amax+1, 'X'))));
    dp[0][a][b][c] = true;
    REP(i, n) {
        REP(x, amax+1) REP(y, amax+1) REP(z, amax+1) {
            auto v = make_tuple(x, y, z);
            if (!dp[i][x][y][z]) continue;
            if (s[i] == "AB") {
                if (x-1 >= 0) {
                    dp[i+1][x-1][min(amax, y+1)][z] = true;
                    de[i+1][x-1][min(amax, y+1)][z] = v;
                    dq[i+1][x-1][min(amax, y+1)][z] = 'B';
                }
                if (y-1 >= 0) {
                    dp[i+1][min(amax, x+1)][y-1][z] = true;
                    de[i+1][min(amax, x+1)][y-1][z] = v;
                    dq[i+1][min(amax, x+1)][y-1][z] = 'A';
                }
            } else if (s[i] == "BC") {
                if (z-1 >= 0) {
                    dp[i+1][x][min(amax, y+1)][z-1] = true;
                    de[i+1][x][min(amax, y+1)][z-1] = v;
                    dq[i+1][x][min(amax, y+1)][z-1] = 'B';
                }
                if (y-1 >= 0) {
                    dp[i+1][x][y-1][min(amax, z+1)] = true;
                    de[i+1][x][y-1][min(amax, z+1)] = v;
                    dq[i+1][x][y-1][min(amax, z+1)] = 'C';
                }
            } else if (s[i] == "AC") {
                if (x-1 >= 0) {
                    dp[i+1][x-1][y][min(amax, z+1)] = true;
                    de[i+1][x-1][y][min(amax, z+1)] = v;
                    dq[i+1][x-1][y][min(amax, z+1)] = 'C';
                }
                if (z-1 >= 0) {
                    dp[i+1][min(amax, x+1)][y][z-1] = true;
                    de[i+1][min(amax, x+1)][y][z-1] = v;
                    dq[i+1][min(amax, x+1)][y][z-1] = 'A';
                }
            }
        }
    }

    bool okay = false;
    ll xc = -1, yc = -1, zc = -1;
    REP(x, amax+1) REP(y, amax+1) REP(z, amax+1) {
        if (dp[n][x][y][z]) {
            okay = true;
            xc = x, yc = y, zc = z;
        }
    }
    say(Yes(okay));
    if (!okay) return 0;

    vector<char> ans(n, 'X');
    DSRNG(i, n, 1) {
        ll xn, yn, zn;
        tie(xn, yn, zn) = de[i][xc][yc][zc];
        ans[i-1] = dq[i][xc][yc][zc];
        xc = xn, yc = yn, zc = zn;
    }
    // DUMP(make_pair(xc, yc));
    // DUMP(make_pair(a, b));
    say(ans, "\n");
    
}

Measured memory_bytes: 477792