s=input()
res=0
now=0
while len(s) and s[0]=='ｗ':
    s=s[1:]
for i in range(len(s)):
    if s[i]=='ｗ':
        now+=1
    else:
        res=max(res,now)
        now=0
res=max(res,now)
if res==0:
    print('')
    exit()
s+='お'
left=0
now=0
for i in range(len(s)):
    if s[i]=='ｗ':
        now+=1
    elif i-1>=0 and s[i-1]=='ｗ':
        if res==now:
            print(s[left:i-res])
        now=0
        left=i