S = input().strip()
Wlen = []
cnt = 0
for i in range(len(S)):
    if S[i]=="ｗ":
        cnt += 1
    else:
        if cnt>0:
            Wlen.append(cnt)
        cnt = 0
if cnt>0:
    Wlen.append(cnt)
wmax = 0
if len(Wlen)>0:
    wmax = max(Wlen)
if len(Wlen)>1 and Wlen.index(wmax)==0:
    wmax = max(Wlen[1:])
if wmax==0 or wmax==len(S):
    print("")
else:
    ans = []
    cnt = 0
    x = ""
    for i in range(len(S)):
        if S[i]=="ｗ":
            cnt += 1
            if cnt==wmax and x!="":
                ans.append(x)
        else:
            if cnt>0:
                x = S[i]
                cnt = 0
            else:
                x += S[i]
    for x in ans:
        print(x)