while True:
try:
string = input()
string+=" " //后面添加一个空格,用于应对句子最后一个字符是字符串而无法添加的情况
new_string = []
sub_str =[]
for word in string:
if word.isalpha():
sub_str.append(word)
else:
new_string.append(sub_str)
sub_str = []
sorted_str =[]
for i in range(len(new_string)-1,-1,-1):
if new_string[i]:// 去除掉数组为空的情况
item="".join(new_string[i])
sorted_str.append(item)
print(" ".join(sorted_str))
except:
break