#include <stdio.h>

int n;
char trib[26][26];

int v[26];

int test(){
	for(int i=0;i<26;i++){
		v[i] = 0;
	}
	
	if(scanf("%d", &n)<=0)return 0;
	
	for(int i=0;i<n;i++){
		scanf("%s", trib[i]);
	}
	
	for(int i=0;i<n;i++){
		for(int j=0;j<n;j++){
			int a = trib[i][j]-'A';
			v[a]++;
		}
	}
	bool end = false;
	int ch;
	int right;
	for(int i=0;i<26;i++){
		if(v[i]==1){
			ch = i+'A';
			end = true;
		}
		if(v[i]>n)ch = i+'A';
		if(v[i]<n && v[i]>1)right = i+'A';
	}
	int px;
	int py;
	for(int i=0;i<n;i++){
		int r = 0;
		int c = 0;
		for(int j=0;j<n;j++){
			if(trib[i][j]==ch){
				if(end){
					printf("%d %d %c\n", i+1,j+1,right);
					return 1;
				}
				r++;
			}
			if(trib[j][i]==ch){
				c++;
			}
		}
		if(r==2)py = i+1;
		if(c==2)px = i+1;
	}
	printf("%d %d %c\n", py,px,right);
	
	return 1;
}


int main(){
	while(test());
	return 0;
}