#include <stdio.h>
#include <iostream>
#include <vector>
#include <set>
#include <string>
#include <map>
#include <algorithm>

using namespace std;

int find_etalon(vector<string> arr){
    if(arr[0]==arr[1])
        return 0;
    if(arr[0]==arr[2])
        return 0;
    if(arr[1]==arr[2])
        return 1;
}

int main(){
    //freopen("input.txt","r",stdin); freopen("output.txt","w",stdout);
    int n;
    while(cin>>n){
        vector<string> rows(n),cols(n);
        for(int i=0;i<n;i++){
            cin >> rows[i];
            for(int j=0;j<n;j++)
                cols[j]+=rows[i][j];
        }
        for(int i=0;i<n;i++){
            sort(rows[i].begin(),rows[i].end());
            sort(cols[i].begin(),cols[i].end());
        }
         
        string row_et = rows[find_etalon(rows)];
        string col_et = cols[find_etalon(cols)];
        int r,c;
        for(int i=0;i<n;i++){
            if(rows[i]!=row_et){
                r = i;
            }
            if(cols[i]!=col_et)
                c = i;
        }
        char ans;
        for(int i=0;i<n;i++){
            bool t = false;
            for(int j=0;j<n;j++)
                if(row_et[i]==rows[r][j])
                    t = true;
            if(!t){
                ans = row_et[i];
                break;
            }
        }
        cout << r+1 << " " << c+1 << " " << ans << endl;
    }
    return 0;
}