#include <bits/stdc++.h>
using namespace std;
int main() {
  int arr[6];
  for (int i = 0; i < 6; i++) {
    cin >> arr[i];
  }
  sort(arr, arr + 6);
  int tracker[10];
  for (int i = 0; i < 10; i++) {
    tracker[i] = 0;
  }
  for (int i = 0; i < 6; i++) {
    tracker[arr[i]]++;
  }
  int legs = -1;
  for (int i = 0; i < 10; i++) {
    if (tracker[i] >= 4) {
      legs = i;
      break;
    }
  }
  if (legs != -1) {
    int head1 = -1, head2;
    int taken[6];
    int takenCounter = 0;
    for (int i = 0; i < 6; i++) {
      taken[i] = 0;
    }
    for (int i = 0; i < 6; i++) {
      if (arr[i] == legs) {
        taken[i] = 1;
        takenCounter++;
      }
      if (takenCounter == 4) {
        break;
      }
    }
    for (int i = 0; i < 6; i++) {
      if (taken[i] == 0) {
        if (head1 == -1) {
          head1 = arr[i];
        } else {
          head2 = arr[i];
        }
      }
    }
    if (head1 != head2) {
      cout << "Bear";
    } else {
      cout << "Elephant";
    }
  } else {
    cout << "Alien";
  }
}
