#include <bits/stdc++.h>
using namespace std;

using i32 = int;
using i64 = long long;
using f64 = long double;
using i128 = __int128_t;
using p2 = pair<i64, i64>;
using el = tuple<i64, i64, i64>;

void _main();
int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  _main();
}

i64 pow(i64 x, i64 n) {
  i64 res = 1;
  i64 t = x;
  while (n > 0) {
    if (n & 1) {
      res = res * t;
    }
    t = t * t;
  }
  return res;
}

void _main() {
  string s1, s2, s3;
  cin >> s1 >> s2 >> s3;
  vector<string> s = {s1, s2, s3};
  vector<string> a1 = {"gray","brown","green","cyan","blue","yellow","orange","red"};
  vector<string> a2 = {"gray","green","blue","yellow","red"};
  vector<string> a3 = {"gray","green","cyan","blue","violet","orange","red"};
  vector<vector<string>> A = {a1, a2, a3};
  vector<i64> ord = {0, 1, 2};
  i64 ans = 0;
  for (i64 i = 0; i < a1.size(); i++) {
    for (i64 j = 0; j < a2.size(); j++) {
      for (i64 k = 0; k < a3.size(); k++) {
        if (a1[i] == s1 && a2[j] == s2 && a3[k] == s3) {
          ans++;
        } else if (a1[i] == s1 && a2[j] == s3 && a3[k] == s2) {
          ans++;
        } else if (a1[i] == s2 && a2[j] == s1 && a3[k] == s3) {
          ans++;
        } else if (a1[i] == s2 && a2[j] == s3 && a3[k] == s2) {
          ans++;
        } else if (a1[i] == s3 && a2[j] == s1 && a3[k] == s2) {
          ans++;
        } else if (a1[i] == s3 && a2[j] == s2 && a3[k] == s1) {
          ans++;
        }
      }
    }
  }
  if (ans == 1) {
    cout << "Yes\n";
  } else {
    cout << "No\n";
  }
}