#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");
}