#include <bits/stdc++.h>
#define FILENAME "CODE"
#define ll long long
#define el cout << '\n'
#define ii pair<ll, ll>
#define fi first
#define se second
#define pb push_back
#define YES cout << "YES", el
#define NO cout << "NO", el
#define print_type cout
#define print_el print_type << '\n'
#define DEBUG(...) [](auto && ... x) {int i = 0; ((print_type << (i++ ? " " : "") << x), ...), print_el;} (__VA_ARGS__)
#define bit(mask, i) (((mask) >> (i)) & 1)
#define BIT(n) (1ll << (n))
using namespace std;
const bool is_brute = 0;
const bool multi_test = 0;
const bool is_gen = 1;
string ans;
int press(string p);
string guess_sequence(int N)
{
string ch = "ABXY";
string ans = "";
if (press("AB"))
{
if (press("B"))
swap(ch[0], ch[1]);
}
else
{
if (press("X"))
swap(ch[0], ch[2]);
else
swap(ch[0], ch[3]);
}
ans = ch[0];
while (ans.size() < N - 1)
{
int state = press(ans + ch[1] + ch[1] + ans + ch[1] + ch[2] + ans + ch[1] + ch[3] + ans + ch[2]);
if (state == ans.size())
ans.push_back(ch[3]);
else if (state == ans.size() + 1)
ans.push_back(ch[2]);
else
ans.push_back(ch[1]);
}
if (press(ans + ch[1]) == N)
ans.push_back(ch[1]);
else if (press(ans + ch[2]) == N)
ans.push_back(ch[2]);
else
ans.push_back(ch[3]);
return ans;
}
void gen()
{
cin >> ans;
if (ans == guess_sequence(ans.size()))
cout << "PASSED\n";
else
cout << "WRONG\n";
}
void solve()
{
gen();
}
#ifdef LOCAL
int main()
{
ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
if (fopen(FILENAME".INP", "r"))
{
freopen(FILENAME".INP", "r", stdin);
if (is_brute)
freopen(FILENAME"_TRAU.OUT", "w", stdout);
else
freopen(FILENAME".OUT", "w", stdout);
}
int ntest;
if (multi_test)
cin >> ntest;
else
ntest = 1;
for (int itest = 1; itest <= ntest; itest++)
{
// cout << itest, el;
solve();
}
}
#endif
