S = input()[::-1]

cnt = 0
moji = ""
ans = {}
for s in S:
    if s == "ｗ":
        if cnt and moji:
            if cnt not in ans:
                ans[cnt] = [moji[::-1]]
            else:
                ans[cnt].append(moji[::-1])
            moji = ""
            cnt = 0
        cnt += 1
    else:
        if not cnt and not moji:
            continue
        moji += s
        
if moji:
    if cnt not in ans:
        ans[cnt] = [moji[::-1]]
    else:
        ans[cnt].append(moji[::-1])

try:
    for a in ans[max(ans.keys())][::-1]:
        print(a)
except ValueError:
    print("")