// #pragma GCC optimize("O3")
// #pragma GCC optimize("unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,popcnt,lzcnt")
#include<bits/stdc++.h>
  
using namespace std;
  
#define i64 long long
#define mp make_pair
#define pb push_back
#define all(x) (x).begin(), (x).end()

const int MAXN = 2e5 + 5;
string S[3];
void Solve(void) {
  vector<string> ans;
  for (int i = 0; i < 3; i ++) {
    cin >> S[i];
    if (S[i] != "bubble" && S[i] != "tapioka") {
      ans.pb(S[i]);
    }
  }
  if (ans.empty()) {
    cout << "nothing" << "\n";
    return;
  }
  for (auto x : ans) cout << x << " "; cout << "\n";
}
signed main() {
  ios_base::sync_with_stdio(false); cin.tie(0);
  cout << fixed << setprecision(10);
  int Tests = 1; // cin >> Tests; 
  for (int i = 1; i <= Tests; i ++) {
    // cout << "Case " << i << ": ";
    Solve();    
  }
}