#include <bits/stdc++.h>

using namespace std;

#define FOR(i, a, b) for(int i = (a); i < (b); i++)
#define RFOR(i, a, b) for(int i = (a) - 1; i >= (b); i--)
#define SZ(a) int(a.size())
#define ALL(a) a.begin(), a.end()
#define PB push_back
#define MP make_pair
#define F first
#define S second

typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PII;
typedef double db;

const int N = 25;
int ans[N][N];


int main()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
	int n;
	cin >> n;
	FOR(i, 0, n)
	{
		string s;
		cin >> s;
		FOR(j, 0, n)
		{
			if(s[j] == 'S' || s[j] == 'F')
				ans[i][j] = (s[j] == 'F');
			else
				ans[i][j] = -1;
		}
	}
	int cntBad = 0;
	int x = 0;
	FOR(i, 0, n)
	{
		FOR(j, 0, n)
		{
			if(ans[i][j] != -1)
			{
				cntBad += ans[i][j] != (x ^ (i + j < n) ^ 1);
			}
		}
	}
	if(cntBad >= n / 2)
		x ^= 1;
	FOR(i, 0, n)
	{
		FOR(j, 0, n)
		{
			if(i == j)
			{
				cout << '.';
				continue;
			}
			if(ans[i][j] == -1)
				ans[i][j] = x ^ (i + j < n) ^ 1;
			
			cout << (ans[i][j] == 0 ? 'S' : 'F');
		}
		cout << "\n";
	}
		
	
	
	
	
	
	return 0;
}