using System;
using System.Collections.Generic;
using System.Linq;
using static System.Console;
using static System.Math;

class MainClass : Scanner
{
    static void Main()
    {
        var (N, A, B, C) = ReadTuple<int,int,int,int>();
        string[] S = new string[N];
        for (int i = 0; i < N; i++)
        {
            S[i] = RString();
        }
        if (A + B + C == 0) WriteLine("No");
        else if (A + B + C == 1)
        {
            bool frag = true;
            var ans = new List<string>();
            int[] abc = new int[3] { A, B, C };
            for (int i = 0; i < N; i++)
            {
                var s = S[i];
                int inda = charToIndex(s[0]);
                int indb = charToIndex(s[1]);
                if (abc[inda] == 0 && abc[indb] == 0)
                {
                    frag = false; break;
                }
                else//swap
                {
                    (abc[inda], abc[indb]) = (abc[indb], abc[inda]);
                    if (abc[inda] == 1)
                    {
                        ans.Add(IndexToChar(inda).ToString());
                    }
                    else
                    {
                        ans.Add(IndexToChar(indb).ToString());
                    }
                }

            }
            if (frag)
            {
                WriteLine("Yes");
                WriteLine(string.Join(Environment.NewLine, ans));
            }
            else
            {
                WriteLine("No");
            }

        }
        else
        {
            bool frag = true;
            var ans = new List<string>();
            int[] abc = new int[3] { A, B, C };
            for (int i = 0; i < N; i++)
            {
                var s = S[i];
                int inda = charToIndex(s[0]);
                int indb = charToIndex(s[1]);
                if (abc[inda] == 0 && abc[indb] == 0)
                {
                    frag = false; break;
                }
                else if (abc[inda] == 1 && abc[indb] == 1)
                {
                    if (i == N - 1)
                    {
                        abc[inda]++;abc[indb]--;
                        ans.Add(IndexToChar(inda).ToString());
                    }
                    else
                    {
                        var ns = S[i + 1];
                        if (s == ns)
                        {
                            abc[inda]++;abc[indb]--;
                            ans.Add(IndexToChar(inda).ToString());
                        }
                        else
                        {
                            if (ns.Contains(s[0]))
                            {
                                abc[inda]++; abc[indb]--;
                                ans.Add(IndexToChar(inda).ToString());
                            }
                            else
                            {
                                abc[inda]--; abc[indb]++;
                                ans.Add(IndexToChar(indb).ToString());
                            }
                        }
                    }
                }
                else
                {
                    if (abc[inda] >= abc[indb])
                    {
                        abc[inda]--;abc[indb]++;
                        ans.Add(IndexToChar(indb).ToString());
                    }
                    else
                    {
                        abc[inda]++; abc[indb]--;
                        ans.Add(IndexToChar(inda).ToString());
                    }
                }
                
            }
            if (frag)
            {
                WriteLine("Yes");
                WriteLine(string.Join(Environment.NewLine,ans));

            }
            else
            {
                WriteLine("No");
            }
        }
    }
    static int charToIndex(char a)
    {
        return a - 'A';
    }
    static char IndexToChar(int b)
    {
        return (char)('A' + b);
    }
}



class Scanner
{
    public static string RString() => Console.ReadLine();
    public static int RInt() => ReadTuple<int>();
    public static long RLong() => ReadTuple<long>();
    public static double RDouble() => ReadTuple<double>();

    public static string[] RStrings() => Console.ReadLine().Split();
    public static int[] RInts() => Array.ConvertAll(Console.ReadLine().Split(), int.Parse);
    public static long[] RLongs() => Array.ConvertAll(Console.ReadLine().Split(), long.Parse);
    public static double[] RDoubles() => Array.ConvertAll(Console.ReadLine().Split(), double.Parse);
    public static int[] RInts(Func<string, int> func) => Console.ReadLine().Split().Select(func).ToArray();
    public static long[] RLongs(Func<string, long> func) => Console.ReadLine().Split().Select(func).ToArray();
    public static double[] RDoubles(Func<string, double> func) => Console.ReadLine().Split().Select(func).ToArray();
    //public static string[] RStrings(Func<string, string> func) => Console.ReadLine().Split().Select(func).ToArray();

    public static T1 ReadTuple<T1>()
    {
        var r = RString();
        var r1 = (T1)Convert.ChangeType(r, typeof(T1));
        return r1;
    }
    public static (T1, T2) ReadTuple<T1, T2>()
    {
        var r = RStrings();
        var r1 = (T1)Convert.ChangeType(r[0], typeof(T1));
        var r2 = (T2)Convert.ChangeType(r[1], typeof(T2));
        return (r1, r2);
    }
    public static (T1, T2, T3) ReadTuple<T1, T2, T3>()
    {
        var r = RStrings();
        var r1 = (T1)Convert.ChangeType(r[0], typeof(T1));
        var r2 = (T2)Convert.ChangeType(r[1], typeof(T2));
        var r3 = (T3)Convert.ChangeType(r[2], typeof(T3));
        return (r1, r2, r3);
    }
    public static (T1, T2, T3, T4) ReadTuple<T1, T2, T3, T4>()
    {
        var r = RStrings();
        var r1 = (T1)Convert.ChangeType(r[0], typeof(T1));
        var r2 = (T2)Convert.ChangeType(r[1], typeof(T2));
        var r3 = (T3)Convert.ChangeType(r[2], typeof(T3));
        var r4 = (T4)Convert.ChangeType(r[3], typeof(T4));
        return (r1, r2, r3, r4);
    }
}


Measured memory_bytes: 36720