#include <cstdio>
#include <set>
#include <cstring>

using namespace std;

int main (  )
{
	int n, counter[26];
	char result, wrong, string[30][30];
	
	while(scanf("%d\n", &n) == 1)
	{
		memset(counter, 0, 26*sizeof(int));
		
		for(int i = 0; i < n; ++i)
		{
			fgets(string[i],n+2,stdin);
			for (int j = 0; j < n; ++j)
				counter [ string[i][j] - 'A' ]++;	
		}
			
		for ( int i = 0; i < 26; ++i )
			if ( counter [ i ] == n-1 )
			{
				result = 'A'+i;
			}
			
		bool simpleCase;
		for ( int i = 0; i < 26; ++i )
			if ( counter [ i ] == n+1 )
			{
				wrong = 'A'+i;
				simpleCase = false;
			}
			else if ( counter [ i ] == 1 )
			{
				wrong = 'A'+i;
				simpleCase = true;
			}
		
		int x, y, cnt = 0;
		if ( simpleCase )
		{
			for ( int i = 0; i < n; ++i )
				for ( int j = 0; j < n; ++j )
				{
					if ( string[i][j] == wrong )
					{
						x = i + 1;
						y = j + 1;
					}
				}
		}
		else
		{
			for ( int i = 0; i < n && cnt < 2; ++i )
			{
				cnt = 0;
				for ( int j = 0; j < n && cnt < 2; ++j )
				{
					if ( string[i][j] == wrong )
						cnt++;
					if ( cnt == 2 )
						x = i + 1;
				}
			}
			cnt = 0;
			for ( int i = 0; i < n && cnt < 2; ++i )
			{
				cnt = 0;
				for ( int j = 0; j < n && cnt < 2; ++j )
				{
					if ( string[j][i] == wrong )
						cnt++;
					if ( cnt == 2 )
						y = i + 1;
				}
			}			
		}
		
		printf ( "%d %d %c\n", x, y, result );
	}
	return 0;
}