import sys, time, random
from collections import deque, Counter, defaultdict
input = lambda: sys.stdin.readline().rstrip()
ii = lambda: int(input())
mi = lambda: map(int, input().split())
li = lambda: list(mi())
inf = 2 ** 63 - 1
mod = 998244353

S = set(["watermelon","beachball","shrinebell"])

ss = set([input() for _ in range(2)])

for v in S:
    if v not in ss:
        print(v)