#include <bits/stdc++.h>
using namespace std;
const long long mod = 1e9 + 7;
const double eps = 1e-8;
const long long INF = 0x3f3f3f3f;
const long long maxn = 1e5 + 5;
const long long maxm = 1e6 + 5;
string s1, s2, s3, s4;
inline bool work(string s1, string s2) {
  long long a, c;
  swap(s2[0], s2[1]);
  string s = s1 + s2;
  for (long long i = 0, cnt = 0; i < 4; ++i) {
    if (s[i] == 'X')
      continue;
    else if (s[i] == 'A')
      a = cnt;
    else if (s[i] == 'C')
      c = cnt;
    cnt++;
  }
  return a + 1 == c || (a == 2 && c == 0);
}
inline long long read();
signed main() {
  cin >> s1 >> s2 >> s3 >> s4;
  puts(work(s1, s2) == work(s3, s4) ? "YES" : "NO");
  return 0;
}
inline long long read() {
  long long x = 0, f = 1;
  char ch = getchar();
  while (ch < '0' || ch > '9') {
    if (ch == '-') f = -1;
    ch = getchar();
  }
  while (ch >= '0' && ch <= '9')
    x = (x << 1) + (x << 3) + (ch ^ 48), ch = getchar();
  return x * f;
}
