#include<iostream>
#include<cstdio>
#include<stack>
#include<queue>
#include<algorithm>
#include<string>
#include<set>
#include<map>
#include<vector>
#include<math.h>
#include<tuple>
#include<string.h>
#include <numeric> 
#include<unordered_map>
using namespace std; 
#define sim template < class c
#define ris return * this
#define dor > debug & operator <<
#define eni(x) sim > typename \
  enable_if<sizeof dud<c>(0) x 1, debug&>::type operator<<(c i) {
sim > struct rge { c b, e; };
sim > rge<c> range(c i, c j) { return rge<c>{i, j}; }
sim > auto dud(c* x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug {
#ifdef LOCAL
~debug() { cerr << endl; }
eni(!=) cerr << boolalpha << i; ris; }
eni(==) ris << range(begin(i), end(i)); }
sim, class b dor(pair < b, c > d) {
  ris << "(" << d.first << ", " << d.second << ")";
}
sim dor(rge<c> d) {
  *this << "[";
  for (auto it = d.b; it != d.e; ++it)
    *this << ", " + 2 * (it == d.b) << *it;
  ris << "]";
}
#else
sim dor(const c&) { ris; }
#endif
};
#define pp(...) "\033[94m [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "]\033[0m"
#define pp1(...) "\033[1;47;35m" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "]\033[0m"
#define dg(x) debug() << pp1(x)
#define dg1(x) debug() << pp(x)
#define dg2(x,y) debug() << pp(x) pp(y)
#define dg3(x,y,z) debug() << pp(x) pp(y) pp(z)
#define dg4(w,x,y,z) debug() << pp(w) pp(x) pp(y) pp(z)
#define int long long
#define all(x) x.begin() , x.end()
#define clr(x) memset(x , 0 , sizeof x);
#define sz(x) (int)x.size()
template<typename T> void db(T x ){ debug() <<">>> " <<  x; }
template<typename T> void db(T x , T y){ debug() <<">>> " <<  x <<" , "<< y; }
template<typename T> void db(T x , T y , T z){ debug() <<">>> "<< x <<" , "<< y <<" , "<< z; }
template<typename T> void db(T x , T y , T z , T a){ debug() <<">>> "<< x <<" , " << y <<" , "<< z <<" , "<< a; }
const int xx = 2e5;
const int Mod = 1e9 + 7;
const int inf = 1e18;
const int Maxn = 20010;

signed main(){
  ios::sync_with_stdio(false);cin.tie(0);

  int n;
  map<char , int> mp;
  cin >> n;
  cin >> mp['A'];
  cin >> mp['B'];
  cin >> mp['C'];

  vector<char> ans;
  vector<string> vs(n);
  for(int i = 0; i < n; i++) {
    cin >> vs[i];
  }
  vector<int> bc(n + 1,0);
  int cnt = 0;
  for(int i = n - 1; i >= 0; i--) {
    cnt += (vs[i] == "BC");
    bc[i] = cnt;
  }
  for(int i = 0; i + 1 < n; i++) {
   if(mp[vs[i][0]] == 0 && mp[vs[i][1]] == 0) {
     cout << "No" << '\n';
     return 0;
    }
    if(mp[vs[i][0]] == 0) {
      ans.push_back(vs[i][0]);
      mp[vs[i][0]]++;
      mp[vs[i][1]]--;
      continue;
    }
    if(mp[vs[i][1]] == 0) {
      ans.push_back(vs[i][1]);
      mp[vs[i][1]]++;
      mp[vs[i][0]]--;
      continue;
    }
    if(vs[i][0] == vs[i + 1][0] || vs[i][0] == vs[i + 1][1]) {
      ans.push_back(vs[i][0]);
      mp[vs[i][0]]++;
      mp[vs[i][1]]--;
    }
    else {
      ans.push_back(vs[i][1]);
      mp[vs[i][1]]++;
      mp[vs[i][0]]--;
    }
  }
  if(mp[vs[n-1][0]] == 0 && mp[vs[n-1][1]] == 0) {
    cout << "No" << '\n';
    return 0;
  }
  else if(mp[vs[n-1][0]] >= 1) {
    ans.push_back(vs[n-1][1]);
  }
  else ans.push_back(vs[n-1][0]);

  cout << "Yes" << '\n';
  for(auto i : ans) {
    cout << i << '\n';
  }
}

Measured memory_bytes: 6292