#include<bits/stdc++.h>
using namespace std;

int main()
{
	ios::sync_with_stdio(false);
	cin.tie(nullptr);
	
    vector<string> ST;
    for (int i = 0; i < 2; i++){
        string s;
        cin >> s;
        ST.push_back(s);
    }

    vector<string> ans = {"watermelon","beachball","shrinebell"};

    for (auto s: ans){
        if (find(ST.begin(),ST.end(),s) == ST.end()) {
            cout << s << endl;
        }
    }

    
    return 0;

}