using System;
using System.Collections.Generic;
using static Assistant.Input;
using static Assistant.Debug;
using System.Linq;
using Assistant;
using System.Text;

namespace ABC166F
{
    class Program
    {
        static void Main(string[] args)
        {
            var N = RInt;
            var A = RInt;
            var B = RInt;
            var C = RInt;

            string[] s = new string[N + 1];
            for (int i = 0; i < N; i++)
            {
                s[i] = RString;
            }

            bool can = true;
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < N; i++)
            {
                if (s[i] == "AB")
                {
                    if (A == 0 && B == 0)
                    {
                        can = false;
                        break;
                    }
                    if (A > B)
                    {
                        A--; B++;
                        sb.AppendLine("B");
                    }
                    else if (B > A)
                    {
                        B--; A++;
                        sb.AppendLine("A");
                    }
                    else
                    {
                        if (s[i + 1] == "AC" || A == 0) { A++; B--; sb.AppendLine("A"); }
                        else { A--; B++; sb.AppendLine("B"); }
                    }
                }
                else if (s[i] == "BC")
                {
                    if (B == 0 && C == 0)
                    {
                        can = false;
                        break;
                    }
                    if (B > C)
                    {
                        B--; C++;
                        sb.AppendLine("C");
                    }
                    else if (C > B)
                    {
                        C--; B++;
                        sb.AppendLine("B");
                    }
                    else
                    {
                        if (s[i + 1] == "AB" || B == 0) { B++; C--; sb.AppendLine("B"); }
                        else { B--; C++; sb.AppendLine("C"); }
                    }
                }
                else
                {
                    if (A == 0 && C == 0)
                    {
                        can = false;
                        break;
                    }
                    if (A > C)
                    {
                        A--; C++;
                        sb.AppendLine("C");
                    }
                    else if (C > A)
                    {
                        C--; A++;
                        sb.AppendLine("A");
                    }
                    else
                    {
                        if (s[i + 1] == "AB" || A == 0) { A++; C--; sb.AppendLine("A"); }
                        else { A--; C++; sb.AppendLine("C"); }
                    }
                }

            }

            if (!can) Console.WriteLine("No");
            else
            {
                Console.WriteLine("Yes");
                Console.WriteLine(sb);
            }
        }


    }


}

namespace Assistant
{
    static class Input
    {
        static List<string> line = new List<string>();
        static int index = 0;
        static String RNext()
        {
            if (line.Count <= index) line.AddRange(Console.ReadLine().Split());
            return line[index++];
        }
        public static int RInt => int.Parse(RNext());
        public static long RLong => long.Parse(RNext());
        public static int[] RInts => Console.ReadLine().Split().Select(int.Parse).ToArray();
        public static long[] RLongs => Console.ReadLine().Split().Select(long.Parse).ToArray();
        public static string RString => RNext();
        //以下未テスト
        public static int[] RIntsC(int c) => Enumerable.Repeat(0, c).Select(x => int.Parse(RNext())).ToArray();
        public static long[] RLongsC(int c) => Enumerable.Repeat(0, c).Select(x => long.Parse(RNext())).ToArray();
        public static char[][] RMap(int h) => Enumerable.Repeat(0, h).Select(x => Console.ReadLine().ToCharArray()).ToArray();
    }

    static class Debug
    {
        static public void Draw2D(int[,] map, int mode = 1)
        {
#if DEBUG
            int W = map.GetLength(0);
            int H = map.GetLength(1);

            int[,] map2 = new int[W + 1, H + 1];
            for (int i = 0; i < W + 1; i++)
            {
                for (int j = 0; j < H + 1; j++)
                {
                    if (i == 0 && j == 0) map2[i, j] = 0;
                    else if (i == 0) map2[i, j] = j - 1;
                    else if (j == 0) map2[i, j] = i - 1;
                    else map2[i, j] = map[i - 1, j - 1];
                }
            }

            for (int i = 0; i < W + 1; i++)
            {
                for (int j = 0; j < H + 1; j++)
                {
                    if (mode == 0) Console.Write(map2[i, j] % 10);
                    if (mode == 1) Console.Write(map2[i, j] + " ");
                }
                Console.WriteLine();
            }
            Console.WriteLine();
#endif
        }

        public static void Draw1D(int[] array, int mode = 0)
        {
#if DEBUG
            Console.WriteLine(string.Join(" ", array));
#endif
        }
    }
}


Measured memory_bytes: 28156