#!/usr/bin/env python

indat = input().split('ｗ')
indat.reverse()

sw = 0
wmax = 0.5
ans = [""]
for s in indat:
    if s == '':
        sw += 1
    elif sw == wmax:
        ans.append(s)
        sw = 1
    elif sw >= wmax:
        ans = [s]
        wmax = sw
        sw = 1
    else:
        sw = 1

for a in reversed(ans):
    print(a)