#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int,int> P;
#define REP(i,n) for(ll i=0;i<ll(n);i++)





int main(void){
	cin.tie(nullptr);  ios_base::sync_with_stdio(false);
	ll i,j;

	string S,T;
	cin >> S >> T;

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

	vector<int> v(3,0);
	REP(i,3){
		if(a[i]==S){
			v[i]=1;
		}
		if(a[i]==T){
			v[i]=1;
		}

	}

	REP(i,3){
		if(v[i]==0) cout << a[i] << endl;
	}







	return 0;

}