#include <stdio.h>

char T[500][500];

int Num=1,H;

FILE *IF;
char ss[500];


/*
void Flip(void) {
  int i,j;
  char s[500][500];
  
  for (i=0; i < H; i++)
    for (j=0; j < 205;j++)
      s[i][j] = T[i][j];

  for (i=0; i < H; i++)
    for (j=0; j < 205;j++)
      T[H-1-i][j] = s[i][j];
}
*/


int Try(int n, int i , int j) {
  int x,y,s,sn;
  

  sn = n;
  x = i; y = j;
  
  for (; n; n--) {
    for (s=0; s < (2*n-1); s++)
      if (!T[y][x+s])
        goto no;
        
    y++; x++;
  }

  return 1;
no:
  n = sn;

  if (j >= (n-1)) {
  x = i; y = j;
  
  for (; n; n--) {
    for (s=0; s < (2*n-1); s++)
      if (!T[y][x+s])
        return 0;
        
    y--; x++;
  }

    return 1;
  } else
    return 0;
}

int main() {
  int i,j,n;

  IF = fopen("triangle.in","r");

while(1) {
start:
  fscanf(IF,"%d",&H);
  if (!H)
    break;  
  
  for (i=0; i < 500; i++)
    for(j=0; j < 500;j++)
        T[i][j] = 0;


  fgets(ss,250,IF);
  for (i=0; i < H; i++) {
    fscanf(IF,"%s",&T[i][i]);
  }
    
  for (i=0; i < 500; i++)
    for(j=0; j < 500;j++)
      if (T[i][j] == '-')
        T[i][j] = 1;
      else
        T[i][j] = 0;
        
  printf("Triangle #%d\n",Num++);
  
  for (n=H; n ; n--) {
    for (i=0; i < (2*H - 1); i++) {
      for (j=0; j < H; j++)

        if (Try(n,i,j)) {
          printf("The largest triangle area is %d.\n\n",n*n);
          goto start;
      }
    }
  }

  printf("The largest triangle area is 0.\n\n");
     
}
  return 0;
}