#include <stdio.h>
#include <strings.h>

int main(){

    int teams[26];
    int test[26][3];
    bzero(teams, 26);
    bzero(test,3*26);
    int err_char = 0;
    int err_row = 0;
    int err_col = 0;
    int N = 0;
    int c = 0;
    int i = 0;
    int j = 0;
    int k = 0;
    int buf = 0;
    while(1){

        if (scanf("%d\n", &N) == EOF){break;}
        //c = getchar();
        //printf("c: %c\n", (char)c);
        //if (c == EOF){
        //printf("eof\n");
        //break;}
        //if(c=='\n'){//printf("enter\n");
         //c = getchar();}
    //    printf("c: %c\n", (char)c);

        //printf("N=%d\n", N);
        for(i = 0; i < N; i++){
        if(err_char == 0){
            for (j = 0; j <= N; j++){
                c = getchar();
                if(c=='\n'){continue;}
                teams[c-65]++;
                if(i > 2){
                    if(teams[c-65] == 1){
                        err_char = c;
                        buf = i;
                        err_row = i+1;
                        err_col = j+1;
                    }
                }
                if(i <= 2)
                {
                    test[i][j] = c;
  //                  printf("(%c) - %d, %d",(char)c, i, j);
                }
            }
            }else{
                for (j = 0; j <= N; j++){
                    c= getchar();
                    if(c=='\n'){continue;}
                //if(c=='\n'){c = getchar();}
                    //printf("read %c\n", (char) c);
                }
            }

        }

        if (err_char == 0){
            for(k = 0; k < 26; k++){
                if(teams[k]==1){
                err_char = k+65;
                //printf("k %c", (char)err_char);
                }
                if(teams[k]==2){
                buf = k+65;
                }
            }
            for(i = 0; i < 26; i++){
                for (j = 0; j < 3; j++){
                    if(test[i][j] == err_char){
                        printf("%d %d %c\n",i+1, j+1, (char)buf);
                        break;
                    }
                }
            }
        }else{
            for(j = 0; j<26; j++){
                if(teams[j] == buf){
                    printf("%d %d %c\n", err_row, err_col, (char)(j+65));
                    break;
                }
            }
        }

        for(i = 0; i < 26; i++){
            teams[i] = 0;
        }
        for(i = 0; i < 26; i++){
            for(j = 0; j < 3; j++)
            {
                test[i][j] = 0;
            }
        }
        err_char = 0;
        err_col = 0;
        err_row = 0;
        buf = 0;
        N=0;
    }
    return 0;
}