#include <bits/stdc++.h> #include <atcoder/all> typedef unsigned long long ULLONG; typedef long long LLONG; static const LLONG MOD_NUM = 998244353LL;//1000000007LL; static const LLONG INF_NUM = 1e18; static const int CH_KINDS = 'z' - 'a' + 1; template<class _T> static void get(_T& a) { std::cin >> a; } template<class _T> static void get(_T& a, _T& b) { std::cin >> a >> b; } template<class _T> static void get(_T& a, _T& b, _T& c) { std::cin >> a >> b >> c; } template <class _T> static _T tp_abs(_T a) { if (a < (_T)0) { a *= (_T)-1; } return a; } template <class _T> static _T tp_pow(int x, int exp) { _T ans = 1; _T base = x; while (exp > 0) { if (exp & 1) { ans = (ans * base); } base = (base * base); exp >>= 1; } return ans; } static void task(); int main() { task(); fflush(stdout); return 0; } static void task() { std::vector<std::string> grid(3); for (int i = 0; i < 3; i++) { get(grid[i]); } char even = '.'; char odd = '#'; if (grid[0][0] == '#') { even = '#'; odd = '.'; } for (int h = 0; h < 3; h++) { for (int w = 0; w < 3; w++) { char tar = even; if ((h + w) & 1) { tar = odd; } if (grid[h][w] != tar) { printf("No\n"); return; } } } printf("Yes\n"); }