/* 
 * File:   main.cpp
 * Author: cteam027
 *
 * Created on October 22, 2016, 12:20 PM
 */

#include <cstdlib>
#include <iostream>

using namespace std;

/*
 * 
 */
int Check( int a, int b, int c )
{
    if( a == b && a == c ) return -1;
    if( a == b ) return 2;
    if( a == c ) return 1;
    if( c == b ) return 0;
    return 0;
}



int main(int argc, char** argv) {
    int n;
    string s;
    while( true )
    {
      if( !(cin >> n)  ) break;
      int pole[n+1][n+1];
      for( int i = 0; i < n+1; i++ )
      {
          pole[n][i] = 0;
          pole[i][n] = 0;
      }
      for( int i = 0; i < n; i++ )
      {
          cin >> s;
          for( int j = 0; j < (int)(s . length()); j++ )
          {
              pole[i][j] = (int)s[(int)j];
              pole[n][i] += (int)s[(int)j];
              pole[j][n] += (int)s[(int)j];
          }
      }  
      int x = 0, y = 0;
      for( int i = 0; i < n; i+=1 )
      {
          if(i > n-2)
              break;
          int tmp;
          if( ( tmp = Check( pole[n][i], pole[n][i+1], pole[n][i+2] )) != -1){
              x =  tmp + i;
              break;
          }
      }
      for( int i = 0; i < n; i+=1 )
      {
          if(i > n-2)
              break;
          int tmp;
          if( ( tmp = Check( pole[i][n], pole[i+1][n], pole[i+2][n] )) != -1){
              y =  tmp + i;
              break;
          }
      }
      int tmp = 0;
      char c = '0';
      bool ok = false;
      if( x == 0 )
          tmp = 1;
      else if( x > 0 )
          tmp = x -1;
      //cout << x  << " " << tmp << endl;
      for( int i = 0; i < n; i++ )
      {
          for( int j = 0; j < n; j++ )
          {
              //cout << (char)pole[tmp][i] << " " <<  (char)pole[x][j] << endl;
              if( pole[tmp][i] == pole[x][j]  )
              {
                  ok = true;
                  break;
              }
          }
          if( !ok )
          {
              c = (char)pole[tmp][i];
              break;
          }
          ok = false;
      }   
      cout << x + 1 << " " << y + 1 << " " << c << endl;
      /*
      int res = 0;
      int wrong = pole[x][n];
      int right = 0;
      
      if(x == 0){
            right =  pole[1][n];
      }else{
            right =  pole[x-1][n];
      }
      
      
      if(wrong > right){
        res = pole[x][y] + (wrong - right);  
      }
      else{
          res = pole[x][y] - (right - wrong);  
      }
      
     
      //cout << (char)res << endl;
      cout << x + 1 << " " << y + 1 << " " << (char)res << endl;
      
      */
    }
    return 0;
}