#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using PII = pair<ll, ll>;
#define FOR(i, a, n) for (ll i = (ll)a; i < (ll)n; ++i)
#define REP(i, n) FOR(i, 0, n)
#define ALL(x) x.begin(), x.end()
template<typename T> void chmin(T &a, const T &b) { a = min(a, b); }
template<typename T> void chmax(T &a, const T &b) { a = max(a, b); }
struct FastIO {FastIO() { cin.tie(0); ios::sync_with_stdio(0); }}fastiofastio;
#ifdef DEBUG
#include "program_contest_library/memo/dump.hpp"
#else
#define dump(...)
#endif
const ll INF = 1LL<<60;

int main(void) {
    ll n, a, b, c;
    cin >> n >> a >> b >> c;
    vector<string> s(n);
    REP(i, n) cin >> s[i];

    auto fall = [] {
        cout << "No" << endl;
        exit(0);
    };

    if(a+b+c == 0) fall();

    string ans(n, '?');
    if(a+b+c == 2) {
        REP(i, n) {
            if(s[i]=="AB") {
                if(a==0 && b==0) fall();
                if(a < b) {
                    a++;
                    b--;
                    ans[i] = 'A';
                } else if(a > b) {
                    a--;
                    b++;
                    ans[i] = 'B';
                } else {
                    if(i==n-1 || s[i+1]=="AB" || s[i+1]=="AC") {
                        a++;
                        b--;
                        ans[i] = 'A';
                    } else {
                        b++;
                        a--;
                        ans[i] = 'B';
                    }
                }
            } else if(s[i]=="AC") {
                if(a==0 && c==0) fall();
                if(a < c) {
                    a++;
                    c--;
                    ans[i] = 'A';
                } else if(a > c) {
                    a--;
                    c++;
                    ans[i] = 'C';
                } else {
                    if(i==n-1 || s[i+1]=="AB" || s[i+1]=="AC") {
                        a++;
                        c--;
                        ans[i] = 'A';
                    } else {
                        a--;
                        c++;
                        ans[i] = 'C';
                    }
                }
            } else if(s[i]=="BC") {
                if(b==0 && c==0) fall();
                if(b < c) {
                    b++;
                    c--;
                    ans[i] = 'B';
                } else if(b > c) {
                    b--;
                    c++;
                    ans[i] = 'C';
                } else {
                    if(i==n-1 || s[i+1]=="AB" || s[i+1]=="BC") {
                        b++;
                        c--;
                        ans[i] = 'B';
                    } else {
                        b--;
                        c++;
                        ans[i] = 'C';
                    }
                }
            }
        }
    } else {
        REP(i, n) {
            if(s[i]=="AB") {
                if(a==0 && b==0) fall();
                if(a < b) {
                    a++;
                    b--;
                    ans[i] = 'A';
                } else {
                    a--;
                    b++;
                    ans[i] = 'B';
                }
            } else if(s[i]=="AC") {
                if(a==0 && c==0) fall();
                if(a < c) {
                    a++;
                    c--;
                    ans[i] = 'A';
                } else {
                    a--;
                    c++;
                    ans[i] = 'C';
                }
            } else if(s[i]=="BC") {
                if(b==0 && c==0) fall();
                if(b < c) {
                    b++;
                    c--;
                    ans[i] = 'B';
                } else {
                    b--;
                    c++;
                    ans[i] = 'C';
                }
            }
        }
    }

    cout << "Yes" << endl;
    REP(i, n) cout << ans[i] << "\n";
    return 0;

    return 0;
}


Measured memory_bytes: 6760