S = input()

def solve(S):
    while (S[0] == 'ｗ'):
        S = S[1:]
    count = 0
    record = 0
    words = []
    word = ''
    prev_is_w = True
    for s in S:
        if s == 'ｗ':
            prev_is_w = True
            count += 1
            if count == record:
                words.append(word)
            elif count > record:
                words = [word]
                record = count
        else:
            if prev_is_w:
                word = ''
                prev_is_w = False
            word = word + s
            count = 0

    if words:
        for word in words:
            if word:
                print(word)
    else:
        print()

wcount = S.count('ｗ')
if wcount == 0:
    print()
elif wcount == len(S):
    print()
else:
    solve(S)