#include <bits/stdc++.h>
using namespace std;
template <typename Arg1>
void __f(const char* name, Arg1&& arg1) {
  cerr << name << " : " << arg1 << std::endl;
}
template <typename Arg1, typename... Args>
void __f(const char* names, Arg1&& arg1, Args&&... args) {
  const char* comma = strchr(names + 1, ',');
  cerr.write(names, comma - names) << " : " << arg1 << " | ";
  __f(comma + 1, args...);
}
char a[100005], b[105], c[105];
int main() {
  scanf("%s", a);
  scanf("%s", b);
  scanf("%s", c);
  int la = strlen(a);
  int lb = strlen(b);
  int lc = strlen(c);
  int f = 0, ba = 0, l;
  l = -1;
  for (int i = 0; i < la - lb + 1; i++) {
    int fl = 1;
    for (int j = 0; j < lb; j++) {
      if (b[j] != a[i + j]) {
        fl = 0;
        break;
      }
    }
    if (fl) {
      l = i;
      break;
    }
  }
  if (l != -1)
    for (int i = l + lb; i < la - lc + 1; i++) {
      int fl = 1;
      for (int j = 0; j < lc; j++) {
        if (c[j] != a[i + j]) {
          fl = 0;
          break;
        }
      }
      if (fl) {
        f = 1;
        break;
      }
    }
  l = -1;
  for (int i = la - 1; i >= lb - 1; i--) {
    int fl = 1;
    for (int j = 0; j < lb; j++) {
      if (b[j] != a[i - j]) {
        fl = 0;
        break;
      }
    }
    if (fl) {
      l = i;
      break;
    }
  }
  if (l != -1)
    ;
  for (int i = l - lb; i >= lc - 1; i--) {
    int fl = 1;
    for (int j = 0; j < lc; j++) {
      if (c[j] != a[i - j]) {
        fl = 0;
        break;
      }
    }
    if (fl) {
      ba = 1;
      break;
    }
  }
  if (!f and !ba)
    puts("fantasy");
  else if (!f)
    puts("backward");
  else if (!ba)
    puts("forward");
  else
    puts("both");
  return 0;
}
