'''
解题思路:
不是字母用空格代替,然后倒排
'''
s = input().strip()
#print(s)

for i in s:
    if not i.isalpha():
        s = s.replace(i, ' ')
#print(s) 

x = s.strip().split()
#print(x)
y = x[::-1]
#print(y)

print(' '.join(y))