#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    int n,a,b,c;
    cin >> n >> a >> b >> c;
    int cnt=0;
    for(int x:{a,b,c}) cnt+=(x==0);
    int m=1;
    if(cnt==1) m=3;
    if(cnt==2) m=6;
    a=min(a,m);
    b=min(b,m);
    c=min(c,m);
    vector<vector<vector<vector<bool>>>> dp(n+1,vector<vector<vector<bool>>>(7,vector<vector<bool>>(7,vector<bool>(7,0))));
    vector<vector<vector<vector<char>>>> p(n+1,vector<vector<vector<char>>>(7,vector<vector<char>>(7,vector<char>(7,0))));
    dp[0][a][b][c]=1;
    string s;
    vector<string> t(n+1);
    for(int i=0;i<n;i++)
    {
        cin >> s;
        t[i+1]=s;
        for(int x=0;x<=6;x++)
        {
            for(int y=0;y<=6;y++)
            {
                for(int z=0;z<=6;z++)
                {
                    if(dp[i][x][y][z]==0) continue;
                    if(s=="AB")
                    {
                        if(y>0)
                        {
                            dp[i+1][x+1][y-1][z]=1;
                            p[i+1][x+1][y-1][z]='A';
                        }
                        if(x>0)
                        {
                            dp[i+1][x-1][y+1][z]=1;
                            p[i+1][x-1][y+1][z]='B';
                        }
                    }
                    if(s=="AC")
                    {
                        if(z>0)
                        {
                            dp[i+1][x+1][y][z-1]=1;
                            p[i+1][x+1][y][z-1]='A';
                        }
                        if(x>0)
                        {
                            dp[i+1][x-1][y][z+1]=1;
                            p[i+1][x-1][y][z+1]='C';
                        }
                    }
                    if(s=="BC")
                    {
                        if(z>0)
                        {
                            dp[i+1][x][y+1][z-1]=1;
                            p[i+1][x][y+1][z-1]='B';
                        }
                        if(y>0)
                        {
                            dp[i+1][x][y-1][z+1]=1;
                            p[i+1][x][y-1][z+1]='C';
                        }
                    }
                }
            }
        }
    }
    bool ok=0;
    array<int,3> now;
    for(int x=0;x<=6;x++)
    {
        for(int y=0;y<=6;y++)
        {
            for(int z=0;z<=6;z++)
            {
                if(dp[n][x][y][z]==1)
                {
                    now={x,y,z};
                    ok=1;
                }
            }
        }
    }
    if(ok)
    {
        cout << "Yes\n";
        string res;
        for(int i=n;i>=1;i--)
        {
            auto [x,y,z]=now;
            //cout << x << " " << y << " " << z << endl;
            char e=p[i][x][y][z];
            res+=e;
            if(t[i]=="AB")
            {
                if(e=='A') {x--; y++;}
                else {x++; y--;}
            }
            if(t[i]=="AC")
            {
                if(e=='A') {x--; z++;}
                else {x++; z--;}
            }
            if(t[i]=="BC")
            {
                if(e=='B') {y--; z++;}
                else {y++; z--;}
            }
            now={x,y,z};
        }
        reverse(res.begin(),res.end());
        for(char e:res) cout << e << "\n";
    }
    else cout << "No\n";
    return 0;
}


Measured memory_bytes: 669216