words = input()
re =[]
ss=''
for i in range(len(words)):
    if 'a'<= words[i] <='z' or 'A'<= words[i] <='Z':
        ss += words[i]
    else:
        if ss != '':
            re.append(ss)
        ss = ''
    if i == len(words)-1:
        re.append(ss)

for i in re[::-1]:
    print(i, end=' ')