#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<string>
#include<iostream>
#include<algorithm>

inline void read(int &T) {
	int x=0;bool f=0;char c=getchar();
	while(c<'0'||c>'9'){if(c=='-')f=!f;c=getchar();}
	while(c>='0'&&c<='9'){x=x*10+c-'0';c=getchar();}
	T=f?-x:x;
}

int n,a,b,c;
char ans[100001];
std::string cmd[100001];

void dfs(int step,int a,int b,int c) {
	if(step>n) {
		puts("Yes");
		for(int i=1;i<=n;++i) {
			printf("%c\n",ans[i]);
		}
		exit(0);
	}
	if(cmd[step]=="AB") {
		if(a) {
			ans[step]='B';
			dfs(step+1,a-1,b+1,c);
		}
		if(b) {
			ans[step]='A';
			dfs(step+1,a+1,b-1,c);
		}
	}
	if(cmd[step]=="AC") {
		if(a) {
			ans[step]='C';
			dfs(step+1,a-1,b,c+1);
		}
		if(c) {
			ans[step]='A';
			dfs(step+1,a+1,b,c-1);
		}
	}
	if(cmd[step]=="BC") {
		if(b) {
			ans[step]='C';
			dfs(step+1,a,b-1,c+1);
		}
		if(c) {
			ans[step]='B';
			dfs(step+1,a,b+1,c-1);
		}
	}
}

int main() {
	read(n),read(a),read(b),read(c);
	for(int i=1;i<=n;++i) std::cin>>cmd[i];
	dfs(1,a,b,c);puts("No");
	return 0;
}