#include <iostream>
#include <string>
using namespace std;

int ammount_in_system(char letter, string matrix)
{
    int result=0;
    for (int i =0;i<matrix.length();i++)
    {
        if(matrix[i]==letter){result++;};
    };
    return result;
}

int main()
{
    int n;
    while(cin>>n)
    {
        char answer;
        string *input = new string[n];
        //here i'll store ammount of each letter used in hole matrix.  The one which is used only one time is the wrong one
        int *ammount_of_letter = new int[n+1];
        int column;
        int row;
        for(int i=0;i<n+1;i++)
        {
            ammount_of_letter[i]=0;
        };
        string shitty_column="";
        string letters = "";
        char bukva;


        for(int i=0;i<n;i++)
        {
            cin>>input[i];//got input
            for(int a=0;a<n;a++)
            {
                bukva=input[i][a];
                //now i search bukva
                int found = letters.find(bukva);
                if(found==string::npos)
                {
                    //add bukva if it doesn't exist in letters
                    letters+=bukva;
                };
                found = letters.find(bukva);
                ammount_of_letter[found]++;
            };
        };

        //cout<<"suka, prinialo"<<endl;
        //search for the letter met only once
        int place_of_shitty_letter;
        char shitty_letter;
        for(int i =0;i<n+1;i++)
        {
            if(ammount_of_letter[i]==1||ammount_of_letter[i]>n){place_of_shitty_letter=i;break;};
        };
        shitty_letter=letters[place_of_shitty_letter];
        //is found
        //cout<<"govno bukva is actually "<<shitty_letter<<endl;
        if(ammount_of_letter[place_of_shitty_letter]>n)// C C
        {
            for(int i=0;i<n;i++)
            {
                if(ammount_in_system(shitty_letter,input[i])==2){row=i;break;};
            };
            //find in shitty column
            for(int i =0;i<n;i++)
            {
                for(int a=0;a<n;a++)
                {
                    shitty_column+=input[a][i];
                };

                if(ammount_in_system(shitty_letter,shitty_column)==2){column=i;break;}
                else{shitty_column="";};
            };
        }
        else// H
        {
            for(int i=0;i<n;i++)
            {
                if(input[i].find(shitty_letter)!=string::npos){row=i;column=input[i].find(shitty_letter);break;};
            };
        };
        for(int i=0;i<n+1;i++)
        {
            if(ammount_of_letter[i]==n-1){answer=letters[i];};
        };




        column++;
        row++;
        cout<<row<<" "<<column<<" "<<answer<<endl;
        column=0;
        row=0;
        letters="";
        shitty_column="";

    };
    return 0;
}