import java.util.*
import java.math.*
import kotlin.math.*

fun readLn()=readLine()!!
fun readInt()=readLn().toInt()
fun readInts()=readLn().split(" ").map{it.toInt()}
fun readLong()=readLn().toLong()
fun readLongs()=readLn().split(" ").map{it.toLong()}

val out=mutableListOf<String>()
fun printLine(s:String){out.add(s)}
fun output(){println(out.joinToString("\n"))}

fun DP(n:Int,A:Int,B:Int,C:Int){
    val dp=Array(n+1){Array(3){Array(3){Array(3){false}}}}
    val go=Array(n+1){Array(3){Array(3){Array(3){'-'}}}}
    val o=Array(n+1){""}
    dp[0][A][B][C]=true
    for(i in 1..n){
        val op=readLn()
        for(a in 0..2){
            for(b in 0..2){
                for(c in 0..2)if(dp[i-1][a][b][c]){
                    if(op=="AB" && a>0){dp[i][a-1][b+1][c]=true;go[i][a-1][b+1][c]='B'}
                    if(op=="AB" && b>0){dp[i][a+1][b-1][c]=true;go[i][a+1][b-1][c]='A'}
                    if(op=="AC" && a>0){dp[i][a-1][b][c+1]=true;go[i][a-1][b][c+1]='C'}
                    if(op=="AC" && c>0){dp[i][a+1][b][c-1]=true;go[i][a+1][b][c-1]='A'}
                    if(op=="BC" && b>0){dp[i][a][b-1][c+1]=true;go[i][a][b-1][c+1]='C'}
                    if(op=="BC" && c>0){dp[i][a][b+1][c-1]=true;go[i][a][b+1][c-1]='B'}
                }
            }
        }
        o[i]=op
    }
    for(_a in 0..2){
        for(_b in 0..2){
            for(_c in 0..2){
                var a=_a;var b=_b;var c=_c
                if(dp[n][a][b][c]){
                    printLine("Yes")
                    val stk=Stack<Char>()
                    for(i in n downTo 1){
                        var now=go[i][a][b][c]
                        stk.push(now)
                        if(o[i]=="AB" && now=='A'){a--;b++}
                        if(o[i]=="AB" && now=='B'){a++;b--}
                        if(o[i]=="AC" && now=='A'){a--;c++}
                        if(o[i]=="AC" && now=='C'){a++;c--}
                        if(o[i]=="BC" && now=='B'){b--;c++}
                        if(o[i]=="BC" && now=='C'){b++;c--}
                    }
                    while(!stk.isEmpty())printLine("${stk.pop()}")
                    output()
                    return
                }
            }
        }
    }
    printLine("No")
    output()
}

fun main(){
    var (n,A,B,C)=readInts()
    if(A+B+C<=2){
        DP(n,A,B,C)
        return
    }
    printLine("Yes")
    repeat(n){
        var op=readLn()
        if(op=="AB"){
            if(A==0 && B==0){
                println("No")
                return
            }
            if(A>=B){
                A--;B++
                printLine("B")
            }else{
                B--;A++
                printLine("A")
            }
        }else if(op=="AC"){
            if(A==0 && C==0){
                println("No")
                return
            }
            if(A>=C){
                A--;C++
                printLine("C")
            }else{
                C--;A++
                printLine("A")
            }
        }else{
            if(B==0 && C==0){
                println("No")
                return
            }
            if(B>=C){
                B--;C++
                printLine("C")
            }else{
                C--;B++
                printLine("B")
            }
        }
    }
    output()
}