#include <bits/stdc++.h> 
using namespace std;
using ll =long long;
#define all(v) v.begin(),v.end()
 #define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)

ll INF=2e18;


int main() {
    ios::sync_with_stdio(false);
  cin.tie(0);
  vector<string> vec={"watermelon","beachball","shrinebell"};

vector<bool> note(3);
for(ll i=0;i<2;i++) {
  string s;cin>>s;
  for(ll j=0;j<3;j++) {
    if(vec[j]==s) note[j]=true;
  }
}

for(ll i=0;i<3;i++) {
  if(!note[i]) cout<<vec[i]<<endl;
}
}