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

using namespace std;

int main (  )
{
	int x[26], y[26], n, counter[26];
	char c;
	
	while(scanf("%d\n", &n) == 1)
	{
		memset(x, 0, 26*sizeof(int));
		memset(y, 0, 26*sizeof(int));
		memset(counter, 0, 26*sizeof(int));
		
		for(int i = 0; i < n; ++i)
		{
			for (int j = 0; j < n; ++j)
			{
				scanf("%c", &c);
				if ( ! counter [ c - 'A' ] )
				{
					x [ c - 'A' ] = i;
					y [ c - 'A' ] = j;
				}
				counter [ c - 'A' ]++;	
			}
			scanf("%c", &c);
		}
		for ( int i = 0; i < 26; ++i )
		{
			if ( counter [ i ] == 1 )
			{
				printf("%d %d ", x[i]+1, y[i]+1);
				break;
			}
		}
		for ( int i = 0; i < 26; ++i )
		{
			if ( counter [ i ] == n-1 )
			{
				printf("%c\n", 'A'+i);
				break;
			}
		}
	}
	return 0;
}