#include <string>
#include <algorithm>
#include <vector>
#include <iostream>

using namespace std;

int main()
{
    char x;
    int count;
    string s;
    bool flag = true;
    int c[5];
    for (int i = 0; i < 5; i++)
        c[i] = 0;
    vector < string > a;
    int v[10][10];
    for (int i = 0; i < 10; i++)
    {
        cin >> s;
        a.push_back(s);
    }
    for (int i = 0; i < 10; i++)
        for (int j = 0; j < 10; j++)
        {
            if (a[i][j] == 'X')
            {
                if (j == 0 || a[i][j - 1] == '.')
                    count = 1;
                else
                    count++;
                if (count > 4)
                    flag = false;
                if (j == 9 || a[i][j + 1] == '.')
                    if (count > 1 && count < 5)
                        c[count]++;
                if (i == 0 || a[i - 1][j] == '.')
                    v[i][j] = 1;
                else
                    v[i][j] = v[i - 1][j] + 1;
                if (i > 0 && a[i - 1][j] == 'X' || i < 9 && a[i + 1][j] == 'X')
                    if (j > 0 && a[i][j - 1] == 'X' || j < 9 && a[i][j + 1] == 'X')
                        flag = false;
                if (i > 0 && j > 0 && a[i - 1][j - 1] == 'X')
                    flag = false;
                if (i < 9 && j < 9 && a[i + 1][j + 1] == 'X')
                    flag = false;
                if (i > 0 && j < 9 && a[i - 1][j + 1] == 'X')
                    flag = false;
                if (i < 9 && j > 0 && a[i + 1][j - 1] == 'X')
                    flag = false;
            }
        }
    for (int i = 0; i < 10; i++)
    {
        for (int j = 0; j < 10; j++)
        {
            if (i == 9 || a[i + 1][j] == '.')
                if (v[i][j] > 1 && v[i][j] < 5)
                    c[v[i][j]] ++;
                else
                    if (v[i][j] == 1)
                        if (j == 0 || a[i][j - 1] == '.')
                            if (j == 9 || a[i][j + 1] == '.')
                                c[1]++;
            if (v[i][j] > 4)
                flag = false;
        }
    }
    if (c[1] != 4 || c[2] != 3 || c[3] != 2 || c[4] != 1)
        flag = false;
    if (flag)
        cout << "YES";
    else
        cout << "NO";
}