#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
#define ov4(a, b, c, d, name, ...) name
#define rep3(i, a, b, c) for (ll i = (a); i < (b); i += (c))
#define rep2(i, a, b) rep3(i, a, b, 1)
#define rep1(i, n) rep2(i, 0, n)
#define rep0(n) rep1(aaaaa, n)
#define rep(...) ov4(__VA_ARGS__, rep3, rep2, rep1, rep0)(__VA_ARGS__)
const ll INF = LLONG_MAX / 4;
template <class T>
using vc = vector<T>;
template <class T>
using vvc = vc<vector<T>>;
void solve() {
    vc<string> s(3);
    rep(i, 3) cin >> s[i];
    vc<string> tmp;
    rep(i, 3) if (s[i] != "tapioka" and s[i] != "bubble") tmp.push_back(s[i]);
    s = tmp;
    if (s.empty())
        cout << "nothing" << endl;
    else {
        for (auto x : s) cout << x << " ";
        cout << endl;
    }
}
int main() {
    cin.tie(0)->sync_with_stdio(0);
    cout << fixed << setprecision(20);
    ll t = 1;
    // cin >> t;
    for (int i = 1; i <= t; i++) solve();
}