w = "ｗ"

S = input() + "_"
S = S.lstrip(w).split(w)

if len(S) == 1:
    print()
    exit()
cnt = [[] for _ in range(100)]
c = 0
b = ""
for s in S:
    if s != "":
        cnt[c].append(b)
        b = s
        c = 0
    else:
        c += 1


for i in range(99, -1, -1):
    if cnt[i]:
        print(*cnt[i], sep="\n")
        break