# -*- coding: utf-8 -*-
from collections import defaultdict

s = input()

#print(s)
L = len(s)
#print("L", L)

mp = defaultdict(list)

count = 0
t = ""
w = 'ｗ'
last = ''

for i in reversed(range(L)):
    #print(i)
    c = s[i]
    #print(c)
    if c==w:
        if last==w:
            count += 1
        else:
            # register
            mp[count].append(t)
            t = ""
            count = 1
    # 文字
    else:
        if last=='':
            continue
        else:
            t = c + t
    last = c
    #print("count", count)

if(t!=""):
    mp[count].append(t)

# print(mp)

keys = list(mp.keys())
ma = keys[-1]
# print(ma)

texts = mp[ma]
for s in reversed(texts):
    print(s)