#include <stdio.h>
#include <stdlib.h>
#include <string.h>

main()
{
  char s[160001];
  char buf[17];
  int n;
  
  s[0] = '\0';
  n = 0;

  while (n < 10000 && read(0, buf, 16) == 16) {
    buf[16] = '\0';
    if (strchr(buf, 'A') != NULL) {
      n++;
      strcat(s, buf);
    }
  }

  write(1, s, n*16);
  exit(0);
}